Passive Radar STAP Detection and DoA Estimation Under Antenna Calibration Errors
نویسندگان
چکیده
This article addresses the problem of clutter cancelation for slowly moving target detection and localization in multichannel passive radar onboard mobile platforms. A post-Doppler space-time adaptive processing (STAP) approach is exploited case an angle-dependent imbalance affecting receiving channels. While suppression capability ensured by adaptivity filtering, different solutions are compared, aimed at recovering performance losses associated with channel calibration errors. generalized-likelihood ratio test (GLRT) scheme considered, where steering vector not specified spatial domain, resulting a noncoherent integration echoes across compared fully coherent GLRT from stationary scene proper mismatch. The first proves to be simple solution case, offering comparable capability. second scheme, expense additional stage, offers slightly better preserves direction-of-arrival (DoA) estimation Finally, STAP employed maximum-likelihood DoA, evaluating role against negative impact imbalance. effectiveness proposed approaches tested both simulated experimental data DVB-T-based radar.
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ژورنال
عنوان ژورنال: IEEE Transactions on Aerospace and Electronic Systems
سال: 2021
ISSN: ['1557-9603', '0018-9251', '2371-9877']
DOI: https://doi.org/10.1109/taes.2021.3061803