MVDR Multi-Beam MVDR Technique for Removing Interference Signals in Array Antenna Based GPS Receivers

The present invention relates to a multi-beam minimum variance distortionless response (MVDR) processing method based on an array antenna, capable of preventing degradation of reception performance of a global positioning system (GPS) signal. According to the present invention, the multi-beam MVDR p...

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Hauptverfasser: KIL, HAENG BOK, LEE, KWANG PYO, JEONG, EUI RIM
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description The present invention relates to a multi-beam minimum variance distortionless response (MVDR) processing method based on an array antenna, capable of preventing degradation of reception performance of a global positioning system (GPS) signal. According to the present invention, the multi-beam MVDR processing method based on an array antenna comprises: a step (a) of assuming that power of a jammer is greater than that of noise in order to determine a beamforming vector (underlined w) of each of a plurality of antennas, so as to calculate power of a space-time filter output (r(n)) including a beamforming vector; a step (b) of calculating a plurality of independent constraints to set a beam in multiple directions; a step (c) of using the beamforming vector (underlined w) to convert each independent constraint into a single constraint; a step (d) of using a Lagrangian multiplier (λ) to calculate a beamforming vector (underlined wopt)for minimizing output power; a step (e) of using a function optimization method to calculate an algorithm for finding a time-space area filter coefficient; and a step (f) of inputting a current sample value instead of an autocorrelation matrix in the algorithm for calculating the time-space area filter coefficient to simply the algorithm. 본 발명은 본 발명 배열 안테나 기반의 다중 빔 MVDR 처리방법은, a) 다수의 안테나 각각의 빔포밍 벡터()를 결정하기 위하여 재머의 전력은 잡음보다 크다고 가정하여, 빔포밍 벡터가 포함된 공간-시간 필터 출력(r(n))의 전력을 구하는 단계와, b) 다수의 방향으로의 빔을 설정하는 복수의 독립적인 제약조건을 구하는 단계와, c) 각 독립적인 제약조건을 빔포밍 벡터()를 이용하여 단일한 제약조건으로 변환하는 단계와, d) 라그랑주 승수()를 이용하여 출력전력을 최소화하는 빔포밍 벡터(opt)를 산출하는 단계와, e) 함수 최적화 방법을 사용하여 공간-시간 영역 필터 계수를 찾는 알고리즘을 구하는 단계와, f)상기 공간-시간 영역 필터 계수를 찾는 알고리즘에 현재의 샘플 값을 자기상관 행렬을 대입하여 단순화하는 단계를 포함한다.
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According to the present invention, the multi-beam MVDR processing method based on an array antenna comprises: a step (a) of assuming that power of a jammer is greater than that of noise in order to determine a beamforming vector (underlined w) of each of a plurality of antennas, so as to calculate power of a space-time filter output (r(n)) including a beamforming vector; a step (b) of calculating a plurality of independent constraints to set a beam in multiple directions; a step (c) of using the beamforming vector (underlined w) to convert each independent constraint into a single constraint; a step (d) of using a Lagrangian multiplier (λ) to calculate a beamforming vector (underlined wopt)for minimizing output power; a step (e) of using a function optimization method to calculate an algorithm for finding a time-space area filter coefficient; and a step (f) of inputting a current sample value instead of an autocorrelation matrix in the algorithm for calculating the time-space area filter coefficient to simply the algorithm. 본 발명은 본 발명 배열 안테나 기반의 다중 빔 MVDR 처리방법은, a) 다수의 안테나 각각의 빔포밍 벡터()를 결정하기 위하여 재머의 전력은 잡음보다 크다고 가정하여, 빔포밍 벡터가 포함된 공간-시간 필터 출력(r(n))의 전력을 구하는 단계와, b) 다수의 방향으로의 빔을 설정하는 복수의 독립적인 제약조건을 구하는 단계와, c) 각 독립적인 제약조건을 빔포밍 벡터()를 이용하여 단일한 제약조건으로 변환하는 단계와, d) 라그랑주 승수()를 이용하여 출력전력을 최소화하는 빔포밍 벡터(opt)를 산출하는 단계와, e) 함수 최적화 방법을 사용하여 공간-시간 영역 필터 계수를 찾는 알고리즘을 구하는 단계와, f)상기 공간-시간 영역 필터 계수를 찾는 알고리즘에 현재의 샘플 값을 자기상관 행렬을 대입하여 단순화하는 단계를 포함한다.</description><subject>ANALOGOUS ARRANGEMENTS USING OTHER WAVES</subject><subject>ANTENNAS, i.e. RADIO AERIALS</subject><subject>BASIC ELECTRIC ELEMENTS</subject><subject>DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES</subject><subject>ELECTRICITY</subject><subject>LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION ORRERADIATION OF RADIO WAVES</subject><subject>MEASURING</subject><subject>PHYSICS</subject><subject>RADIO DIRECTION-FINDING</subject><subject>RADIO NAVIGATION</subject><subject>TESTING</subject><fulltext>true</fulltext><rsrctype>patent</rsrctype><creationdate>2018</creationdate><recordtype>patent</recordtype><sourceid>EVB</sourceid><recordid>eNqNi80KgkAYRd20iOodPmgtjLXQrfZPCKHSVobpagP6aTMq9PYN0QO0uhzOuXMP6X2fUTo2g_YTyJa-XEA9Wb9GUNUZytB2k-aaLjzAVDBgBcp1zbKxpJliY-SbYmeZJSXS4kGnW-6OCnqCsUtvVrkWq98uvPXxUOzOPvquhO2lAmMor9lGBJEQYRBGQbz9r_oAzDo92A</recordid><startdate>20180628</startdate><enddate>20180628</enddate><creator>KIL, HAENG BOK</creator><creator>LEE, KWANG PYO</creator><creator>JEONG, EUI RIM</creator><scope>EVB</scope></search><sort><creationdate>20180628</creationdate><title>MVDR Multi-Beam MVDR Technique for Removing Interference Signals in Array Antenna Based GPS Receivers</title><author>KIL, HAENG BOK ; LEE, KWANG PYO ; JEONG, EUI RIM</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-epo_espacenet_KR20180071781A3</frbrgroupid><rsrctype>patents</rsrctype><prefilter>patents</prefilter><language>eng ; kor</language><creationdate>2018</creationdate><topic>ANALOGOUS ARRANGEMENTS USING OTHER WAVES</topic><topic>ANTENNAS, i.e. RADIO AERIALS</topic><topic>BASIC ELECTRIC ELEMENTS</topic><topic>DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES</topic><topic>ELECTRICITY</topic><topic>LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION ORRERADIATION OF RADIO WAVES</topic><topic>MEASURING</topic><topic>PHYSICS</topic><topic>RADIO DIRECTION-FINDING</topic><topic>RADIO NAVIGATION</topic><topic>TESTING</topic><toplevel>online_resources</toplevel><creatorcontrib>KIL, HAENG BOK</creatorcontrib><creatorcontrib>LEE, KWANG PYO</creatorcontrib><creatorcontrib>JEONG, EUI RIM</creatorcontrib><collection>esp@cenet</collection></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext_linktorsrc</fulltext></delivery><addata><au>KIL, HAENG BOK</au><au>LEE, KWANG PYO</au><au>JEONG, EUI RIM</au><format>patent</format><genre>patent</genre><ristype>GEN</ristype><title>MVDR Multi-Beam MVDR Technique for Removing Interference Signals in Array Antenna Based GPS Receivers</title><date>2018-06-28</date><risdate>2018</risdate><abstract>The present invention relates to a multi-beam minimum variance distortionless response (MVDR) processing method based on an array antenna, capable of preventing degradation of reception performance of a global positioning system (GPS) signal. According to the present invention, the multi-beam MVDR processing method based on an array antenna comprises: a step (a) of assuming that power of a jammer is greater than that of noise in order to determine a beamforming vector (underlined w) of each of a plurality of antennas, so as to calculate power of a space-time filter output (r(n)) including a beamforming vector; a step (b) of calculating a plurality of independent constraints to set a beam in multiple directions; a step (c) of using the beamforming vector (underlined w) to convert each independent constraint into a single constraint; a step (d) of using a Lagrangian multiplier (λ) to calculate a beamforming vector (underlined wopt)for minimizing output power; a step (e) of using a function optimization method to calculate an algorithm for finding a time-space area filter coefficient; and a step (f) of inputting a current sample value instead of an autocorrelation matrix in the algorithm for calculating the time-space area filter coefficient to simply the algorithm. 본 발명은 본 발명 배열 안테나 기반의 다중 빔 MVDR 처리방법은, a) 다수의 안테나 각각의 빔포밍 벡터()를 결정하기 위하여 재머의 전력은 잡음보다 크다고 가정하여, 빔포밍 벡터가 포함된 공간-시간 필터 출력(r(n))의 전력을 구하는 단계와, b) 다수의 방향으로의 빔을 설정하는 복수의 독립적인 제약조건을 구하는 단계와, c) 각 독립적인 제약조건을 빔포밍 벡터()를 이용하여 단일한 제약조건으로 변환하는 단계와, d) 라그랑주 승수()를 이용하여 출력전력을 최소화하는 빔포밍 벡터(opt)를 산출하는 단계와, e) 함수 최적화 방법을 사용하여 공간-시간 영역 필터 계수를 찾는 알고리즘을 구하는 단계와, f)상기 공간-시간 영역 필터 계수를 찾는 알고리즘에 현재의 샘플 값을 자기상관 행렬을 대입하여 단순화하는 단계를 포함한다.</abstract><oa>free_for_read</oa></addata></record>
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subjects ANALOGOUS ARRANGEMENTS USING OTHER WAVES
ANTENNAS, i.e. RADIO AERIALS
BASIC ELECTRIC ELEMENTS
DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES
ELECTRICITY
LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION ORRERADIATION OF RADIO WAVES
MEASURING
PHYSICS
RADIO DIRECTION-FINDING
RADIO NAVIGATION
TESTING
title MVDR Multi-Beam MVDR Technique for Removing Interference Signals in Array Antenna Based GPS Receivers
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