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Небесная энциклопедия

Космические корабли и станции, автоматические КА и методы их проектирования, бортовые комплексы управления, системы и средства жизнеобеспечения, особенности технологии производства ракетно-космических систем

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Мониторинг СМИ и социальных сетей. Сканирование интернета, новостных сайтов, специализированных контентных площадок на базе мессенджеров. Гибкие настройки фильтров и первоначальных источников.

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Применить Всего найдено 35. Отображено 35.
12-12-2017 дата публикации

P CODE ACQUISITION METHOD BASED ON PARALLEL FOLDING AND RECEIVER FOR ACQUIRING P CODE BASED ON PARALLEL FOLDING

Номер: KR1020170136721A
Автор: YOON, SEOK HO, CHAE, KEUN HONG
Принадлежит:

The present invention provides a technique for acquiring a precision (P) code from a receiver. A method for acquiring a P code based on parallel folding comprises the following steps of: the receiver receiving an input signal; the receiver folding each of a plurality of local codes; the receiver determining a candidate point in an observation window while performing a correlation operation of the input signal in parallel with the plurality of local codes; and the receiver using a direct search technique or a zero padding technique at the candidate point to determine a synchronization point. COPYRIGHT KIPO 2018 (111) Code generator (112) Second sample extractor (113a,113b) Delaying device (120a,120b,120e) Folding device (130) First sample extractor (140a,140b,140e,) Correlator (150) Zero-padding device (161a,161b,161c,162a,162b,162c) Determiner (163) Comparator (AA) Input signal ...

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Номер записи: 1
08-11-2016 дата публикации

AltBOC 신호 추적을 위한 주변 첨두 제거 장치 및 그 방법

Номер: KR0101673995B1
Автор: 이성로, 채근홍, 윤석호
Принадлежит: 목포대학교산학협력단

AltBOC 신호 추적을 위한 주변 첨두 제거 장치 및 그 방법을 개시한다. 첨두 제거 방법으로서, AltBOC(Alternative Binary Offset Carrier) 신호를 수신하는 단계, 수신된 AltBOC 신호를 다수의 부분 부반송파로 해석하는 단계, 해석한 부분 부반송파로부터 부분상관 함수를 얻는 단계 및 부분 상관함수들을 조합하여 주변 첨두를 제거하는 단계를 포함한다.

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Номер записи: 2
20-04-2023 дата публикации

스펙트럼 센싱 장치 및 그 동작방법

Номер: KR20230052619A
Автор: 김유성, 채근홍, 박정인
Принадлежит:

... 본 발명은, 관심 주파수 대역의 무선 신호를 수신하는 수신기, 상기 무선 신호를 샘플링하여 디지털 신호를 출력하는 ADC(Analog Digital Caonverter), 상기 디지털 신호의 자기 상관을 수행하여 상관 함수를 출력하는 상관기 및 상기 상관 함수에 대응하는 이미지 패턴을 생성하고, 상기 이미지 패턴에 따라 상기 관심 주파수 대역의 점유 여부를 확인하는 제어부를 포함하는 스펙트럼 센싱 장치를 제공한다.

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Номер записи: 3
13-03-2018 дата публикации

TMBOC SIGNAL TRACKING METHOD AND TMBOC SIGNAL TRACKING APPARATUS

Номер: KR101838402B1
Автор: YOON, SEOK HO, CHAE, KEUN HONG
Принадлежит: RESEARCH & BUSINESS FOUNDATION SUNGKYUNKWAN UNIVERSITY

A method of tracking a time multiplexed binary offset carrier (TMBOC) signal includes: a step in which a receiver receives a TMBOC signal; a step in which the receiver divides a subcarrier of the TMBOC signal into 12 partial subcarriers having the same cycle; a step in which the receiver generates 12 partial correlation functions by correlating each of the 12 partial subcarriers and the received TMBOC signal; a step in which the receiver generates a first correlation function by combining a first partial correlation function and a final partial correlation function among the 12 partial correlation functions; a step in which the receiver generates a second correlation function by combining a fifth correlation function and a sixth correlation function among the 12 partial correlation functions and the first correlation function; a step in which the receiver generates a third correlation function by combining the remaining partial correlation functions not used for generating the second correlation ...

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Номер записи: 4
26-12-2017 дата публикации

메모리 어레이에 기반한 P 코드 획득 방법 및 메모리 어레이에 기반하여 P 코드를 획득하는 수신기

Номер: KR0101812325B1
Автор: 윤석호, 채근홍
Принадлежит: 성균관대학교산학협력단

... 메모리 어레이에 기반한 P 코드 획득 방법은 수신기가 수신한 입력 신호를 복수의 수신 코드로 구분하는 단계, 상기 수신기가 상기 복수의 수신 코드 각각에 대한 FFT 연산값을 제1 메모리 열에 저장하는 단계, 상기 수신기가 생성한 연속된 로컬 코드를 복수의 로컬 코드로 구분하는 단계, 상기 수신기가 상기 복수의 로컬 코드 각각에 대한 FFT 연산값을 제2 메모리 열에 저장하는 단계, 상기 수신기가 상기 복수의 로컬 코드 중 상기 연속된 로컬 코드에서 이웃하는 적어도 하나의 로컬 코드의 쌍에 대한 FFT 연산값을 합산한 값을 결정하는 단계, 상기 수신기가 상기 복수의 수신 코드 각각에 대해 대응하는 상기 적어도 하나의 로컬 코드의 쌍에 대한 합산한 값에 대한 상관 연산을 수행하고, 상관 연산의 결과값을 중첩하는 단계 및 상기 수신기가 상기 중첩된 결과값이 임계값을 넘는지를 기준으로 동기화 지점을 결정하는 단계를 포함한다.

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Номер записи: 5
26-12-2017 дата публикации

METHOD AND DEVICE TO TRACK SINE-PHASED BOC SIGNAL

Номер: KR101812323B1
Автор: YOON, SEOK HO, CHAE, KEUN HONG
Принадлежит: RESEARCH & BUSINESS FOUNDATION SUNGKYUNKWAN UNIVERSITY

A sine-phased BOC signal tracking method includes the following steps by a receiver: receiving a sine-phased BOC signal; generating a first sub correlation function by using the received BOC signal and a first local signal generated by using the first pulse of a PN code chip cycle of the BOC signal; generating a second sub correlation function by using the received BOC signal and a second local signal generated by using the last pulse of the PN code chip cycle of the BOC signal; generating a first correlation function by combining the first sub correlation function with an auto-correlation function of the BOC signal, and generating a second correlation function by combining the second sub correlation function with the auto-correlation function of the BOC signal; generating a new correlation function by combining the first and second correlation functions; and tracking a signal by using the new correlation function. As such, the present invention is capable of enabling precise signal tracking ...

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Номер записи: 6
15-03-2016 дата публикации

METHOD FOR OPTIMIZING TRANSMISSION PARAMETERS AND WEIGHT VECTOR BASED ON GENETIC ALGORITHM FOR IMPLEMENTING DYNAMIC SPECTRUM ACCESS, COGNITIVE ENGINE APPARATUS AND COGNITIVE RADIO SYSTEM USING THE METHOD

Номер: KR0101603431B1
Автор: 채근홍, 윤석호
Принадлежит: 성균관대학교산학협력단

... 본 발명의 동적 스펙트럼 액세스를 구현하기 위한 유전자 알고리즘 기반의 전송 파라미터 최적화 방법은 전체 스펙트럼에 걸쳐 일차 사용자(PU) 신호가 존재하는 점유 대역들 및 유휴 협대역들에 관한 스펙트럼 센싱 정보를 지속적으로 획득하는 단계, 최적화하고자 하는 전송 파라미터들의 가능한 후보값들을 획득하는 단계, 획득한 전송 파라미터들의 후보값들의 인덱스들을 조합한 유전자 비트열에 대해 다목적 적합도 함수를 연산하여 얻은 적합도 값에 따라 유전자 선택, 교배, 돌연변이 및 대체 연산함으로써 매 세대 별로 유전자 비트열들을 선정하는 단계 및 다목적 적합도 함수를 최대로 만드는 유전자 비트열에 따른 전송 파라미터 값들을 최적화된 전송 파라미터 값들로 산출하는 단계를 포함하고, 전송 파라미터들은 등가 등방 복사 전력 EIRP, 변조 지수 M, 유휴 협대역의 대역폭 W(k) 및 이차 사용자(SU) 신호 대역폭 Bs을 포함하며, 다목적 적합도 함수는 각각 대역폭 활용도, 데이터 전송률, 간섭량 및 비트 오류율에 관한 단일 목적 적합도 함수들의 가중 합이다.

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Номер записи: 7
29-05-2015 дата публикации

METHOD FOR OPTIMIZING TRANSMISSION PARAMETER AND WEIGHT VECTOR BASED ON GENETIC ALGORITHM FOR IMPLEMENTING DYNAMIC SPECTRUM ACCESS, AND COGNITIVE ENGINE APPARATUS AND COGNITIVE RADIO SYSTEM USING SAME

Номер: KR1020150059087A
Автор: CHAE, KEUN HONG, YOON, SEOK HO
Принадлежит:

The present invention provides a method for optimizing transmission parameters and weight vectors based on genetic algorithms for implementing dynamic spectrum access, the method comprising the steps of: acquiring continuously spectrum sensing information on, across the whole spectrum, occupied bands where first PU signals exist and idle narrow bands; acquiring candidate values for transmission parameters to optimize; selecting genetic bit strings by each generation by performing calculation for gene selection, breeding, mutation and substitution according to an suitability level value which is obtained by applying a multi-purpose suitability function to genetic bit strings combining indices of the candidate values of the acquired transmission parameters; and computing, as optimized transmission parameter values, the transmission parameters values according to the genetic bit strings which can maximize the value of a multi-purpose suitability function, wherein the transmission parameters ...

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Номер записи: 8
24-07-2015 дата публикации

COOPERATIVE SPECTRUM SENSING APPARATUS AND COOPERATIVE SPECTRUM SENSING METHOD

Номер: KR0101535251B1
Автор: 이영포, 채근홍, 윤석호
Принадлежит: 성균관대학교산학협력단

... 협력 스펙트럼 셍싱 방법은 무선인지 네트워크의 검파기가 복수의 이차 사용자들로부터 일차 사용자에게 할당된 스펙트럼 대역에 대한 사용 상태 정보인 관측 벡터를 수신하는 단계(901), 검파기가 관측 벡터( )에 대한 순서 통계량을 생성하는 단계(902), 순서 통계량에서 크기가 작은 순서대로 관측 샘플을 선택하여 GLRT 검정 통계량을 생성하는 단계(903) 및 GLRT 검정 통계량을 합산하여 0 또는 1로 표현되는 분석 결과값( )을 생성하는 단계(904) 및 검파기가 분석 결과값을 융합 센터부(200)에 전달하고 융합 센터부(FC, 200)가 분석 결과값을 융합하여 스펙트럼 대역의 사용 여부를 판단하는 단계(905)를 포함한다.

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Номер записи: 9
12-12-2017 дата публикации

METHOD FOR ACQUIRING P CODE BASED ON MEMORY ARRAY, AND RECEIVER FOR ACQUIRING P CODE BASED ON MEMORY ARRAY

Номер: KR1020170136722A
Автор: YOON, SEOK HO, CHAE, KEUN HONG
Принадлежит:

The present invention relates to a method for acquiring a P code based on a memory array, which comprises the steps of: dividing an input signal received by a receiver into a plurality of reception codes; storing, by the receiver, a fast Fourier transform (FFT) operation value for each of the reception codes in a first memory column; dividing a continuous local code generated by the receiver into a plurality of local codes; storing, by the receiver, the FFT operation value for each of the local codes in a second memory column; determining, by the receiver, a value of the sum of the FFT operation value for at least one pair of local codes neighboring in the continuous local code among the local codes; performing, by the receiver, a correlation operation for the value of the sum of the at least one pair of local codes corresponding to each of the reception codes, and superimposing result values of the correlation operation; and determining, by the receiver, a synchronization point based on ...

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Номер записи: 10
09-11-2015 дата публикации

METHOD FOR GENERATING ALTBOC CORRELATION FUNCTION, METHOD FOR TRACKING ALTBOC SIGNAL, AND METHOD FOR TRACKING ALTBOC SIGNLA

Номер: KR101567697B1
Автор: YOON, SEOK HO, CHAE, KEUN HONG
Принадлежит: RESEARCH & BUSINESS FOUNDATION SUNGKYUNKWAN UNIVERSITY

A method for generating an AltBOC correlation function includes the following steps: a receiver receives an AltBOC signal; the receiver interprets a subcarrier of the AltBOC signal as eight partial subcarriers having the same period; the receiver calculates correlations between the AltBOC signal and each of the eight partial subcarriers to generate partial correlation functions; and the receiver combines the partial correlation functions to generate the final correlation function. COPYRIGHT KIPO 2016 (110) Step where a receiver receives an AltBOC signal (120) Step where the receiver interprets a subcarrier of the AltBOC signal as eight partial subcarriers having the same period (130) Step where the receiver calculates correlations between the AltBOC signal and each of the eight partial subcarriers to generate partial correlation functions (140) Step where the receiver combines the partial correlation functions to generate the final correlation function (AA) Start (BB) End ...

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Номер записи: 11
19-04-2017 дата публикации

METHOD FOR ACQUIRING PN CODE IN RECEIVER AND RECEIVER FOR ACQUIRING PN CODE

Номер: KR101728626B1
Автор: YOON, SEOK HO, CHAE, KEUN HONG
Принадлежит: RESEARCH & BUSINESS FOUNDATION SUNGKYUNKWAN UNIVERSITY

A method for acquiring a pseudo noise (PN) code in a receiver comprises the following: converting an input signal into a return-to-zero (RZ) signal by the receiver; generating a first summation signal by performing an XOR operation on the RZ signal and the delayed signal delayed by the reference time of the RZ signal by the receiver; collecting seeds codes of n lengths from the first summation signal by the receiver; generating a PN code based on the seed code by the receiver; and generating a second summation signal by performing an XOR operation on the PN code and the delayed signal by the receiver. According to the present invention, a PN code can be obtained when the PN code is constantly modulated. COPYRIGHT KIPO 2017 (210) First converter (220) Retarder (240) Seed estimator (255) Switch controller (260) PN code generator (280) Second converter (290) Determiner (AA) Input signal (BB) Obtain a normal signal (CC) Fail to obtain the normal signal ...

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Номер записи: 12
30-12-2020 дата публикации

METHOD AND APPARATUS OF UNAMIGUOUS BINARY OFFSET CARRIERBOC SIGNAL TRACKING

Номер: KR102196792B1
Автор: 윤석호, 채근홍
Принадлежит: 성균관대학교산학협력단

... 본 발명의 비모호 BOC 신호를 추적하는 방법은 이진 오프셋 반송파(Binary Offset Carrier:BOC)신호를 수신하는 수신 단계, 수신된 BOC 신호를 위성항법 수신기의 목적에 따라 복수의 파라미터를 달리하여 복수의 목적 적합도 함수에 적용하고, 복수의 목적 적합도 함수에 복수의 가중치를 부여하는 가중치 단계, 복수의 목적 적합도 함수를 결합하여 다중 목적 적합도 함수를 도출하는 도출 단계, 다중 목적 적합도 함수에서 도출된 도출 값을 가지는 신호추적 파라미터를 탐색하는 탐색 단계 및 신호추적 파라미터를 바탕으로 비모호 신호의 추적을 수행하는 수행 단계를 포함한다.

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Номер записи: 13
17-12-2015 дата публикации

SIDE-PEAK CANCELLATION DEVICE FOR TRACKING ALTBOC SIGNAL AND METHOD THEREOF

Номер: KR1020150140949A
Автор: LEE, SEONG RO, CHAE, KEUN HONG, YOON, SEOK HO
Принадлежит:

Disclosed are a side-peak cancellation device for tracking an alternative binary offset carrier (AltBOC) signal and a method thereof. The side-peak cancellation method comprises the following steps of: receiving the AltBOC signal; interpreting the received AltBOC signal as a plurality of partial sub-carriers; obtaining partial correlation functions from the interpreted partial sub-carriers; and cancelling a side-peak by combining the partial correlation functions. COPYRIGHT KIPO 2016 (AA) Start (BB) End (S110) Step of receiving an AltBOC signal (S120) Step of interpreting the received AltBOC signal into multiple partial sub-carriers (S130) Step of obtaining a partial correlation function from the interpreted partial sub-carriers (S140) Step of combining the partial correlation functions and removing a peripheral peak ...

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Номер записи: 14
28-12-2018 дата публикации

METHOD AND DEVICE FOR PROCESSING AltBOC SIGNAL

Номер: KR1020180137808A
Автор: SEOKHO YOON, KEUNHONG CHAE
Принадлежит:

Disclosed are a method and a device for processing an alternative binary offset carrier (AltBOC) signal. According to an embodiment of the present invention, the method for processing an AltBOC signal comprises the steps of: receiving an AltBOC signal; obtaining an autocorrelation function of the received AltBOC signal; obtaining a first correlation function and a second correlation function which individually shift the autocorrelation function by a different delay time on a time axis; obtaining the first correlation function with a peak of a peripheral peak having a negative value by using the autocorrelation function, the first correlation function and the second correlation function; and obtaining a final correlation function corresponding to a final value of the autocorrelation function, and a final correlation function with the surrounding peak removed using the first correlation function. COPYRIGHT KIPO 2019 (AA) Autocorrelation function (BB) Second correlation function (CC) First ...

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Номер записи: 15
26-04-2018 дата публикации

METHOD FOR TRACKING BOC SIGNAL AND APPARATUS FOR TRACKING BOC SIGNAL

Номер: KR101838406B1
Автор: YOON, SEOK HO, CHAE, KEUN HONG
Принадлежит: RESEARCH & BUSINESS FOUNDATION SUNGKYUNKWAN UNIVERSITY

A method of tracking a BOC signal comprises a step of allowing a receiver to receive a BOC signal, a step of allowing the receiver to generate the autocorrelation function of the BOC signal, a step of allowing the receiver to perform a square operation on the autocorrelation function to generate a square correlation function, a step of allowing the receiver to combine the autocorrelation function and the squared correlation function to generate a new correlation function; and a step of allowing the receiver to track a signal using the new correlation function. It is possible to generate a new correlation function where peripheral peaks are removed. COPYRIGHT KIPO 2018 (110) Receive a BOC signal (120) Generate an autocorrelation function of the BOC signal (130) Perform a square operation on the autocorrelation function to generate a square correlation function (140) Combine the autocorrelation function and the squared correlation function to generate a new correlation function (150) Track ...

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Номер записи: 16
13-03-2018 дата публикации

METHOD FOR TRACKING ALTBOC SIGNAL AND APPARATUS FOR TRACKING ALTBOC SIGNAL

Номер: KR101838403B1
Автор: YOON, SEOK HO, CHAE, KEUN HONG
Принадлежит: RESEARCH & BUSINESS FOUNDATION SUNGKYUNKWAN UNIVERSITY

A method for tracking an AltBOC signal includes a steps of allowing a receiver to receive an AltBOC signal, a step of allowing the receiver to divide the subcarrier of the AltBOC signal into 8r (r is a natural number) partial subcarriers having the same period, a step of allowing the receiver to correlate each of the 8r partial subcarriers with the AltBOC signal to generate 8r partial correlation functions, a step of allowing the receiver to combine the partial correlation functions to generate a new correlation function, and a step of allowing the receiver to track a signal using the new correlation function. It is possible to generate a sharp correlation function having a removed surrounding peak. COPYRIGHT KIPO 2018 (110) Step of receiving an AltBOC signal (120) Step of dividing a subcarrier of the AltBOC signal into 8r partial subcarriers having the same period (130) Step of correlating each of the 8r partial subcarriers with the AltBOC signal to generate 8r partial correlation functions ...

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Номер записи: 17
22-01-2021 дата публикации

A method for Generating an Unambiguous Correlation Function

Номер: KR102206155B1
Автор: YOON SEOKHO, CHAE KEUN HONG
Принадлежит: RESEARCH & BUSINESS FOUND SUNGKYUNKWAN UNIV, RESEARCH & BUSINESS FOUNDATION SUNGKYUNKWAN UNIVERSITY

According to the present invention, provided is a non-ambiguous correction function generating method, which receives a BOC signal and then a pair of complexity variable (X = (r, u)) in consideration of the number of divisions (r) and the number of combinations (u) of the BOC signal is calculated. Then, the BOC signal is divided into subcarriers according to the number of divisions determined from the pair of complexity variables, thereby generating a BOC subcarrier. In addition, a non-ambiguous correlation function is generated based on the BOC signal and the BOC subcarrier.

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Номер записи: 18
19-06-2018 дата публикации

AltBOC(15,10) 신호를 추적하는 방법 및 AltBOC(15,10) 신호 추적 장치

Номер: KR0101869223B1
Автор: 윤석호, 채근홍
Принадлежит: 성균관대학교산학협력단

AltBOC(15,10) 신호를 추적하는 방법은 수신기가 AltBOC(15,10) 신호를 수신하는 단계, 상기 수신기가 상기 AltBOC(15,10) 신호를 하나의 PN 코드 칩 주기에서 동일한 길이로 구분한 12개의 부신호 각각과 수신한 AltBOC(15,10) 신호를 상관하여 12개의 부상관함수를 생성하는 단계. 상기 수신기가 상기 부상관함수 중 주 첨두를 갖고 서로 대칭인 2개의 부상관함수를 조합하여 주변 첨두가 제거된 제1 상관함수를 생성하는 단계, 상기 수신기가 상기 부상관함수 중 상기 2개의 부상관함수를 제외하고 서로 대칭인 복수의 부상관함수 쌍을 조합하여 복수의 제2 상관함수를 생성하는 단계, 상기 복수의 제2 상관함수 중 어느 하나와 상기 제1 상관함수를 조합하여 제3 상관함수를 생성하는 단계 및 상기 수신기가 상기 제3 상관함수를 이용하여 신호를 추적하는 단계를 포함한다.

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Номер записи: 19
12-01-2018 дата публикации

병렬적 폴딩에 기반한 P 코드 획득 방법 및 병렬적 폴딩에 기반하여 P 코드를 획득하는 수신기

Номер: KR0101818162B1
Автор: 윤석호, 채근홍
Принадлежит: 성균관대학교산학협력단

... 병렬적 폴딩에 기반한 P 코드 획득 방법은 수신기가 입력 신호를 수신하는 단계, 상기 수신기가 복수의 로컬 코드를 각각 폴딩하는 단계, 상기 수신기가 상기 입력 신호를 각각 상기 복수의 로컬 코드와 병렬적으로 상관 연산을 하면서 관측 윈도우 중에서 후보 지점을 결정하는 단계 및 상기 수신기가 후보 지점에서 직접 검색 기법 또는 제로 패딩 기법을 사용하여 동기화 지점을 결정하는 단계를 포함한다.

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Номер записи: 20
09-12-2015 дата публикации

METHOD FOR SELECTING SATELLITE IN DETERMINING LOCATION BY USING GLOBAL NAVIGATION SATELLITE SYSTEM, SATELLITE SIGNAL RECEIVER, AND DOP VALUE GENERATING METHOD

Номер: KR1020150137651A
Автор: YOON, SEOK HO, CHAE, KEUN HONG
Принадлежит:

A method for selecting a satellite in determining a location by using a global navigation satellite system comprises the following steps of: enabling a receiver to receive a satellite signal from receivable satellites; enabling the receiver to calculate a DOP value which reflects a pseudo-range weighted value to each satellite signal combination including at least four satellite signals; and enabling the receiver to select a satellite signal combination having a DOP value, which is lower than a reference value, among the satellite signal combinations. COPYRIGHT KIPO 2016 (110) Step of enabling a receiver to receive a satellite signal from receivable satellites at a current position (120) Step of enabling a receiver to determine a candidate combination to be used for positioning among the received satellite signals (130) Step of enabling a receiver to calculate a DOP value by using a DOP matrix which reflects a pseudo-range weighted value for the candidate combination (140) Step of selecting ...

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Номер записи: 21
15-05-2015 дата публикации

PERFORMANCE ANALYSIS METHOD OF XFAST IN WIDEBAND JAMMING ENVIRONMENTS

Номер: KR1020150053130A
Автор: LEE, SEONG RO, CHAE, KEUN HONG, YOON, SEOK HO, HEO, YU KYUNG, JUNG, MIN A
Принадлежит:

The present invention relates to a performance analysis method of XFAST in wideband jamming environments and, more specifically, to a method of analyzing how wideband jamming affects average acquisition time of XFAST. The present invention comprises: a step of folding a local P code signal M times as much as the length of a receiving signal N in order to reduce the number of searching code θ; and a step of defining the folded signal in the length of N as one observation window and acquiring the number of the observation window Λ. COPYRIGHT KIPO 2015 ...

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Номер записи: 22
26-05-2015 дата публикации

SIDE-PEAK CANCELATION TECHNIQUE TO IMPROVE TRACKING PERFORMANCE FOR SINE-PHASED BOC(n,n) SIGNAL

Номер: KR1020150056279A
Автор: LEE, SEONG RO, KIM, KYUNG HO, CHAE, KEUN HONG, YOON, SEOK HO, JOO, YANG RO
Принадлежит:

The present invention relates to a side-peak cancelation technique to improve a tracking performance fro a sine-phased BOC(n,n) signal. IThe technique includes: a step to receive the sine-phased BOC signal; a step to interpret the received BOC signal as the shape of the circular pulse; a step to get the partial correlation from the interpreted circular pulses; and a step to create two symmetric correlation functions to overlap only near the main side-peak by combining the partial correlations. COPYRIGHT KIPO 2015 (AA) Start (BB) To interpret the received BOC signal as the shape of the circular pulse (CC) Get the partial correlation from the interpreted circular pulses (DD) Create two symmetric correlation functions to overlap only near the main side-peak by combining the partial correlations (EE) Combining the two created correlations to create on-ambiguous correlation function around the peak that is completely removed (FF) End ...

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Номер записи: 23
24-10-2018 дата публикации

METHOD FOR DIRECTLY ACQUIRING P CODE BASED ON MULTIPLE FOLDING AND RECEIVER THEREOF

Номер: KR1020180115894A
Автор: YOON, SEOK HO, CHAE, KEUN HONG
Принадлежит:

Disclosed in the present invention are a method for directly acquiring a P code based on multiple folding and a receiver thereof. The method for directly acquiring a P code based on multiple folding according to the present invention comprises: a first step of receiving a P code input signal in a receiver; a second step of multiple folding local codes in the receiver; a third step of performing correlation calculation of the P code input signal based on the multiple folded local codes and FFT (Fast Fourier Transform) in the receiver and determining a candidate point in an observation window; a fourth step of multiple folding a local code corresponding to the candidate point in the receiver; a fifth step of performing correlation calculation of the input signal based on the local code corresponding to the multiple folded candidate point, and Fast Fourier Transform (FFT) in the receiver and determining a new candidate point among new observation windows smaller than the previous observation ...

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Номер записи: 24
04-06-2018 дата публикации

METHOD TO TRACK BINARY OFFSET CARRIER SIGNAL WITH AUTOCORRELATION FUNCTION HAVING TWO SIDE PEAKS

Номер: KR101863234B1
Автор: YOON, SEOK HO, CHAE, KEUN HONG
Принадлежит: RESEARCH & BUSINESS FOUNDATION SUNGKYUNKWAN UNIVERSITY

The present invention relates to a method to track a binary offset carrier (BOC) signal with an autocorrelation function having two side peaks by using an autocorrelation function from which the side peaks are removed. According to the present invention, the method to track the BOC signal with an autocorrelation function having two side peaks comprises: a step of allowing a receiver to generate an autocorrelation function having two side peaks through correlation between a BOC signal and a local signal; a step of allowing the receiver to generate a first right-biased function, shifting a left side peak of an autocorrelation function to a position of a right side peak, and a first left-biased function, shifting the right side peak of the autocorrelation function to a position of the left side peak; a step of allowing the receiver to subtract the first right and left biased functions from the autocorrelation function to generate a first autocorrelation function; a step of allowing the receiver ...

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Номер записи: 25
11-08-2017 дата публикации

수신기에서 P 코드를 획득하는 방법

Номер: KR0101767571B1
Автор: 윤석호, 채근홍
Принадлежит: 성균관대학교산학협력단

... 수신기에서 P 코드를 획득하는 방법은 수신기가 입력 신호와 폴딩한 제1 로컬 코드를 이용하여 제1 코드 획득 지점을 결정하는 단계 및 상기 수신기가 상기 입력 신호에 영(0)을 패딩한 신호와 상기 제1 코드 획득 지점 내에 위치하는 코드를 폴딩한 제2 로컬 코드를 이용하여 제2 코드 획득 지점을 결정하는 단계를 포함한다.

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Номер записи: 26
20-04-2023 дата публикации

심층 신경망 기반 개인 식별 장치 및 방법

Номер: KR20230052618A
Автор: 김유성, 신승환, 채근홍, 반성현, 김승현
Принадлежит:

... 본 명세서는 심층 신경망 기반 개인 식별 장치 및 방법에 관한 것이다. 본 명세서의 일 실시예에 따른 개인 식별 방법은 무선 신호 수집부가 서로 다른 위치의 복수의 수신기를 통해 공간 정보 및 식별 대상 자의 식별 정보를 포함하는 복수의 무선 신호를 수신하는 단계, 조작 신호 생성부가 미리 학습된 제1 심층 신경망 모델을 통해 상기 공간 정보를 가공하여 상기 무선 신호로부터 조작 신호를 생성하는 단계 및 개인 식별 처리부가 상기 조작 신호의 식별 대상자의 식별 정보를 제2 심층 신경망 모델의 입력으로 하여 특정 공간의 식별 대상자를 식별하는 단계를 포함한다.

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Номер записи: 27
11-09-2015 дата публикации

BLIND ESTIMATION METHOD FOR OFDM FREQUENCY OFFSET

Номер: KR0101552755B1
Автор: 이영포, 채근홍, 윤석호
Принадлежит: 성균관대학교산학협력단

... 본 발명의 일 예에 따른 블라인드 OFDM 주파수 오프셋 추정방법은 (a) OFDM 수신기에서 비정규 잡음이 포함된 OFDM 신호가 수신되는 단계, (b) OFDM 신호에 코쉬 분포 우도 함수를 적용하여 최대 우도 추정치가 연산되는 단계 및 (c) 초기 주파수 오프셋을 설정하고, 최대 우도 추정치에 대한 유효 추정범위 내에서 반복적 연산으로 최종 주파수 오프셋이 추정되는 단계를 포함한다. 또는 (c) 단계에서 최대 우도 추정치에 대하여 유효 추정범위가 설정되고, 유효 추정범위에 최대 우도 추정치가 균등하게 분포된 경우, 주파수 오프셋이 한 번에 추정되는 단계를 포함한다.

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Номер записи: 28
08-06-2018 дата публикации

ALTBOC (15,10) SIGNAL TRACKING METHOD AND ALTBOC (15,10) SIGNAL TRACKING DEVICE

Номер: KR1020180061625A
Автор: YOON, SEOK HO, CHAE, KEUN HONG
Принадлежит:

An AltBOC (15,10) signal tracking method includes: a step in which a receiver receives AltBOC (15,10) signals; a step in which the receiver generates 12 sub-correlation functions by correlating the AltBOC (15,10) signals with each of 12 sub signals made by dividing the AltBOC (15,10) signals in the same length in one single PN code chip cycle; a step in which the receiver generates a first correlation function, from which surrounding peaks have been removed, by combining two symmetrical sub-correlation functions and having a main peak; a step in which the receiver generates a plurality of second correlation functions by combining a plurality of pairs of symmetrical sub-correlation functions except for the two sub-correlation functions; a step in which the receiver generates a third correlation function by combining one of the second correlation functions with the first correlation function; and a step in which the receiver tracks a signal by using the third correlation function. As such ...

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Номер записи: 29
12-07-2017 дата публикации

METHOD FOR ACQUIRING P-CODE AT RECEIVER

Номер: KR1020170081421A
Автор: YOON, SEOK HO, CHAE, KEUN HONG
Принадлежит:

A method of acquiring a P-code at a receiver includes the steps of: determining a first code acquisition point using a first local code folded with an input signal by a receiver; and determining a second code acquisition point using a signal fading zero in the input signal and a second local code folding a code located within the first code acquisition point. The present invention determines a correct code acquisition point based on an approximate code acquisition point to acquire the P-code quickly and accurately. COPYRIGHT KIPO 2017 (110) Local P-code generator (120) First sample extractor (130) Zero fading device (140) Second sample extractor (150) First folding device (160) Third sample extractor (170) Second folding device (181) First FET (182) Second FET (183) Pair operator (190) Code determining device (AA) Input signal ...

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Номер записи: 30
04-06-2018 дата публикации

METHOD TO TRACK COSINE-PHASED BINARY OFFSET CARRIER SIGNAL AND DEVICE TO TRACK COSINE-PHASED BINARY OFFSET CARRIER SIGNAL

Номер: KR101863235B1
Автор: YOON, SEOK HO, CHAE, KEUN HONG
Принадлежит: RESEARCH & BUSINESS FOUNDATION SUNGKYUNKWAN UNIVERSITY

The present invention relates to a method to track a cosine-phased binary offset carrier (BOC) signal, which realizes signal tracking with low complexity for all cosine-phased BOC signals, and a device to track the cosine-phased BOC signal. According to the present invention, the method to track the cosine-phased BOC signal comprises a step in which a receiver generates an autocorrelation function through correlation between a received cosine-phased BOC signal and a local signal; a step in which the receiver performs an absolute operation for the autocorrelation function to generate an absolute correlation function; a step in which the receiver shifts the absolute correlation function to the right side to generate a right-biased correlation function and shifts the absolute correlation function to the left side to generate a left-biased correlation function; a step in which the receiver combines the absolute correlation function and the left-biased correlation function to generate a first ...

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Номер записи: 31
21-03-2016 дата публикации

SATELLITE SELECTION METHOD FOR DETECTING POSITION IN GLOBAL NAVIGATION SATELLITE SYSTEM, RECEIVER FOR SATELLITE SIGNALS AND GENERATING METHOD OF DOP VALUE

Номер: KR0101603012B1
Автор: 윤석호, 채근홍
Принадлежит: 성균관대학교산학협력단

... 위성항법시스템을 이용한 위치 측위에서 위성을 선택하는 방법은 수신기가 수신가능한 위성들로부터 위성 신호를 수신하는 단계, 상기 수신기가 상기 위성 신호 중 적어도 4개 이상을 포함하는 위성 신호 조합 각각에 대하여 의사 거리 가중치를 반영한 DOP 값을 연산하는 단계 및 상기 수신기가 상기 위성 신호 조합 중 DOP 값이 기준치보다 적은 위성 신호 조합을 선택하는 단계를 포함한다.

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Номер записи: 32
04-06-2015 дата публикации

FREQUENCY OFFSET ESTIMATION METHOD IN OFDM SYSTEM AND OFDM RECEIVER

Номер: KR0101525931B1
Автор: 채근홍, 윤석호
Принадлежит: 성균관대학교산학협력단

... 주파수 오프셋 추정 방법은 주기성을 갖는 제1 훈련 심볼 및 임의의 제2 훈련 심볼을 수신하는 단계, CPB(coherence phase bandwidth)를 이용하여 제1 훈련 심볼에 대한 상관값을 연산하는 단계, 문턱값을 이용하여 상관값에서 첫번째 첨두치의 위치를 결정하는 단계, 정수배 주파수 오프셋 후보의 크기를 제1 훈련 심볼의 주기의 수로 나눈 간격값을 기준으로 나머지 첨두치의 위치를 결정하는 단계 및 CPB를 이용하여 제2 훈련 심볼에 대한 상관값을 연산하고, 첨두치의 위치를 이용하여 제2 훈련 심볼에 대한 상관값의 최대값 지점을 주파수 오프셋으로 추정하는 단계를 포함한다.

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Номер записи: 33
10-04-2018 дата публикации

METHOD FOR TRACKING UNAMBIGUOUSNESS FOR SINE-PHASED BOC SIGNAL AND APPARATUS THEREOF

Номер: KR101847766B1
Автор: YOON, SEOK HO, CHAE, KEUN HONG
Принадлежит: RESEARCH & BUSINESS FOUNDATION SUNGKYUNKWAN UNIVERSITY

The present invention relates to an unambiguousness tracking method for a sine-phased BOC signal. The method comprises the steps of: generating an autocorrelation function by correlating a sine-phased BOC signal received by a receiver with a local signal; generating a first correlation function by modifying the autocorrelation function based on a positive height of a side peak closest to a main peak in the autocorrelation function by the receiver; performing an absolute value operation on the autocorrelation function to generate a second correlation function by the receiver; combining the first and second correlation functions to generate a noble correlation function by the receiver; and tracking a signal using the noble correlation function by the receiver. COPYRIGHT KIPO 2018 (110) Receiving a sine-phased BOC signal (120) Generating an autocorrelation function (130) Generating a first correlation function by modifying the autocorrelation function based on a positive height of a side peak ...

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Номер записи: 34
15-01-2021 дата публикации

BOC An apparatus of generating unambiguous BOC correlation function based on tracking error estimation and a signal tracking apparatus using the apparatus

Номер: KR102203894B1
Автор: YOON SEOKHO, CHAE KEUN HONG
Принадлежит: RESEARCH & BUSINESS FOUND SUNGKYUNKWAN UNIV, RESEARCH & BUSINESS FOUNDATION SUNGKYUNKWAN UNIVERSITY

Embodiments of the present invention relate to a method for optimizing a correlation function based on a genetic algorithm and to a signal tracking device using the same. As an example, the method for generating a correlation function to which a genetic algorithm is applied comprises the steps of: randomly generating a first-generation gene encoding the number of split correlations of subcarriers and the split correlation ratio of each subcarrier; generating a plurality of split correlation functions based on the first generation gene, and generating a correlation function based on the plurality of split correlation functions; estimating a tracking error standard deviation (TESD) by adding random noise to the correlation function; generating the M-generation gene based on the estimated TESD; and generating an optimal correlation function based on the M-generation gene. In this case, M may be set as a natural number of 2 or more to several thousand times.

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Номер записи: 35