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In this paper, radar detection of Swerling target of type 3 in GO-distributed clutter via dynamic programming based track-before-detect (DP-TBD) is considered. Conventional DP-TBD suffers from significant performance loss due to the high frequency of target-like outliers. To enhance the detection performance of DP-TBD, the log-likelihood ratio (LLR) of the measurements is derived and used in the integration...
The conventional CFAR detectors based on reference window suffer a considerable performance degradation in heterogeneous background. In this paper, a new knowledge based constant false alarm rate (KB-CFAR) detector is proposed to reduce the impact of heterogeneous environment. The proposed KB-CFAR detector exploits clutter partition as auxiliary knowledge to select the reference cells. The clutter...
This paper addresses the problem of speckle covariance matrix estimation for Compound-Gaussian clutter. The speckle component is modeled as a low order autoregressive (AR) process. We derive the AR coefficients conditioned Likelihood function of the secondary data and propose an iterative approach for the optimizing problem under the criteria of Maximum-Likelihood (ML). We evaluate the performance...
This correspondence introduces a waveform evaluation and selection strategy (ESS) for application of optimized phase-modulated (PM) waveforms to mitigate compound-Gaussian clutter in radar. This strategy addresses the trade-off between potential improvement in detection performance from adaptive design of PM waveforms and the cost this entails in terms of system resources. An evaluation factor is...
This paper addresses the target detecting problem of the shared-spectrum multistatic radar. All of the transmitters emit the same waveforms in the same spectrum in this radar system. By widely separating the platforms of the shared-spectrum radars and adopting the temporal diversity of transmitter-receiver pairs, the spatial diversity is exploited to improve the detection performance. The signal model...
This paper mainly deals with the problem of detecting a target in SIRV clutter with steering vector mismatches. Assuming that the mismatch of the steering vector is satisfied the conic constraint, the generalized likelihood ratio test (GLRT) is devised, and the geometry explain is presented for the derived solution. Meanwhile, fixed point estimate (FPE) of the covariance structure is adopted using...
This paper mainly deals with the target detecting problem using a MIMO radar against compound-Gaussian clutter with an unknown covariance matrix. The space-time coding MIMO radar model has adopted, and developed to compound-Gaussian case. The detector based on generalized likelihood ratio test (GLRT) criterion is studied, and two-step design procedure is adopted. Specifically, the GLRT is derived...
Non-coherent detection using multiple pulses is very useful in radar detection, especially in the case that the phase information of return pulses is unavailable. This paper addresses the performance of non-coherent CFAR detection based on goodness-of-fit (GoF) tests compared with non-coherent CFAR integrator (NCCI) in different clutter environments by simulation experiments, when the assumed and...
Based on the diversity between the information entropy of target echo and disturbance introduced by high resolution radar, a new detection algorithm for range spread target via Renyi's entropy is proposed for the first time in this paper. The proposed entropy detector's performance assessment and its comparison with two previously traditional detectors show that the entropy detector can achieve satisfactory...
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