Monopulse DOA estimation of two unresolved Rayleigh targets

Blair, W.D.; Brandt-Pearce, Maïté

doi:10.1109/7.937461

Cited by 102 publications

(82 citation statements)

References 9 publications

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“…이들은 크게 통계적 기법과 결정적 기법으로 나누어진다. 통계적 기법은 표적의 통계적 특성 을 얻기 위해 다중펄스를 필요로 하고, 특정 표적 모델에 제한을 가짐은 물론 각도 추정이전에 표적 모델에 대한 정보를 획득해야 한다 [7]～ [10] . 하지만 결정적 기법은 오직 단일 또는 두 개의 펄스를 필요로하기 때문에, 통계적 기 ⓒ Copyright The Korean Institute of Electromagnetic Engineering and Science.…”

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Two Unresolved Target Angle Estimation in Phase Comparison Monopulse Radar

Lee¹,

Cho²,

Kim³

2016

The Journal of Korean Institute of Electromagnetic Engineering

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This paper improves Sherman's two-pulse method for angle estimation of two unresolved targets in phase comparison monopulse radar. The proposed method provides the angle information with only a single-pulse measurement instead of two pulses. The proposed method can estimate a single-target angle by single-target indicator, in contrast with previous techniques. The accuracy of angle estimation for proposed method is demonstrated by simulations.

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Two Unresolved Target Angle Estimation in Phase Comparison Monopulse Radar

Lee¹,

Cho²,

Kim³

2016

The Journal of Korean Institute of Electromagnetic Engineering

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“…Then, with the sampling rate held at one matched filter sample per pulse, each target j contributes to two consecutive matched filter samples (excluding the pathological case of full compression) 2 . Thus, with the two targets lying between two consecutive sampling points, the observation vector can be constructed from the in-phase and quadrature components of the sum, horizontal and vertical difference channels of two consecutive pulse i for matched filter samples as…”

Section: B Monopulse Radar Measurements Modelmentioning

confidence: 99%

“…In [1], the authors used the in-phase and quadrature components of the complex monopulse ratio to develop a GLRT for the detection of two unresolved targets. They developed the monopulse ratio conditional pdf of the amplitude of the sum signal in [2], and then used it to develop the CRLB for the DOA estimator. In [3], they developed an angle estimator based on the inphase and quadrature components of the complex monopulse ratio and the observed signal strengths for two unresolved Raleigh targets.…”

Section: Introductionmentioning

confidence: 99%

MCMC methods for tracking two closely spaced targets using monopulse radar channel signals

Isaac

Willett

Bar‐Shalom

2007

IET Radar Sonar Navig.

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This paper discusses four techniques to successfully track two closely-spaced and unresolved targets using monopulse radar measurements, the quality of such tracking being a determinant of successful detection of target spawn. It explores statistical estimation techniques based on the maximum likelihood criterion and Gibbs sampling, and addresses concerns about the accuracy of the measurements delivered thereby. In particular, the Gibbs approach can deliver joint measurements (and the associated covariances) from both targets, and it is therefore natural to consider a joint filter. The ideas are compared; and amongst the various strategies discussed, a particle filter that operates directly on the monopulse measurements seems to be best.

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“…High resolution techniques have also been studied by radar researchers [6][7][8][9][10]. The monopulse technique has been used in many practical radar systems for DOA estimation [11][12][13][14]. The problem with the monopulse system is that when multiple targets are present in an azimuth cell, it gives only one direction for all the targets [15][16].…”

Section: Introductionmentioning

confidence: 99%