Abstract
Automatic target recognition (ATR) in target search phase is very challenging because the target range and mobility are not yet perfectly known, which results in delay-Doppler uncertainty. In this paper, we firstly perform some theoretical studies on radar sensor network (RSN) design based on linear frequency modulation (LFM) waveform: (1) the conditions for waveform coexistence, (2) interferences among waveforms in RSN, (3) waveform diversity in RSN. Then we apply RSN to ATR with delay-Doppler uncertainty and propose maximum-likeihood (ML) ATR algorithms for fluctuating targets and nonfluctuating targets. Simulation esults show that our RSN vastly reduces the ATR error compared to a single radar system in ATR with delay-Doppler uncertainty. The proposed waveform design and diversity algorithms can also be applied to active RFID sensor networks and underwater acoustic sensor networks.
Highlights
AND MOTIVATIONThe goal for any target recognition system is to give the most accurate interpretation of what a target is at any given point in time
We firstly perform some theoretical studies on radar sensor network (RSN) design based on linear frequency modulation (LFM) waveform: (1) the conditions for waveform coexistence, (2) interferences among waveforms in RSN, (3) waveform diversity in RSN
We have studied LFM waveform design and diversity in radar sensor networks (RSN)
Summary
The goal for any target recognition system is to give the most accurate interpretation of what a target is at any given point in time. We are interested in studying automatic target recognition with range and speed uncertainty, that is, delay-Doppler uncertainty, using radar sensor networks (RSN). We are interested in studying algorithms on radar sensor network (RSN) design based on linear frequency modulation (LFM) waveform: (1) the conditions for waveform coexistence, (2) interferences among waveforms in RSN, (3) waveform diversity in RSN. We apply RSN to automatic target recognition (ATR) with delay-Doppler uncertainty. In [9], CF waveform design was applied to RSN with application to ATR without any delay-Doppler uncertainty. We will focus on the waveform design fusion for radar sensor networks using LFM waveform.
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