Waveform Optimization for Multistatic Radar Imaging Using Mutual Information

This article addresses the problem of radar waveform design for imaging targets in a cluttered environment. A multistatic radar scenario is considered for sparse and random sensor positions. The target impulse response is modeled using the simulated frequency response of a buried metallic mine, and the clutter is modeled using the compound Gaussian (CG) distribution. We explore novel waveform design techniques with respect to the mutual information (MI) criterion based on the CG clutter. The first method presents a waveform that exploits the CG distribution of the scene reflectivity function when projected onto a sparse basis. This is compared to the second method, called the target-specific approach that uses knowledge of the target and clutter frequency responses to optimize a matched illumination waveform. In both cases, the Taguchi and particle swarm optimization solvers are employed for MI-based waveform design optimization. To validate and compare the effectiveness of the optimized waveforms, the resulting scene reflectivity function is estimated using the sparsity-driven regularization radar imaging method. Our experimental results demonstrate that both waveform optimization techniques result in significantly better image reconstruction performance than the traditional linear-frequency-modulated waveform, and that the target-specific approach additionally suppresses clutter information in the scene.

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Work Title Waveform Optimization for Multistatic Radar Imaging Using Mutual Information
Open Access
  1. Zacharie Idriss
  2. Raghu G. Raj
  3. Ram M. Narayanan
License In Copyright (Rights Reserved)
Work Type Article
  1. IEEE Transactions on Aerospace and Electronic Systems
Publication Date February 24, 2021
Publisher Identifier (DOI)
  1. https://doi.org/10.1109/TAES.2021.3061811
Deposited November 23, 2021




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  • Added Creator Zacharie Idriss
  • Added Creator Raghu G. Raj
  • Added Creator Ram M. Narayanan
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