LFM METHOD FOR ESTIMATING A CHIRP RATE OF A LINEAR FREQUENCY MODULATION SIGNAL AND APPARATUS THEREFOR

The present invention relates to a technique for estimating a modulation rate of a linear frequency modulation (LFM) signal, which comprises the steps of: receiving a first LFM signal; deriving a product signal by multiplying the received first LFM signal by a conjugate complex number of a second LF...

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Hauptverfasser:	KIM JUHO, JEONG EUICHEOL, AHN JAE KYUN
Format:	Patent
Sprache:	eng ; kor
Schlagworte:	ANALOGOUS ARRANGEMENTS USING OTHER WAVES DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION ORRERADIATION OF RADIO WAVES MEASURING PHYSICS RADIO DIRECTION-FINDING RADIO NAVIGATION TESTING
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Beschreibung
Zusammenfassung:	The present invention relates to a technique for estimating a modulation rate of a linear frequency modulation (LFM) signal, which comprises the steps of: receiving a first LFM signal; deriving a product signal by multiplying the received first LFM signal by a conjugate complex number of a second LFM signal; defining a cost function using a spectral entropy function of the product signal; and calculating a modulation rate estimate value (θ^^) of the first LFM signal based on the cost function. LFM(Linear Frequency Modulation) 신호의 변조율 추정 기술에 관한 것으로, 제1 LFM 신호를 수신하는 단계와, 상기 수신된 제1 LFM 신호에 제2 LFM 신호의 공액 복소수를 곱하여 곱 신호를 도출하는 단계와, 상기 곱 신호의 스펙트럴 엔트로피(spectral entropy) 함수를 이용하여 비용함수를 정의하는 단계와, 상기 비용함수에 기초하여 상기 제1 LFM 신호의 변조율 추정값()을 구하는 단계를 포함할 수 있다.