High-resolution radar ranging for multiple targets

Zhen Wang; Peter K. Willett; Yaakov Bar-Shalom; W. Dale Blair

doi:10.1117/12.478497

7 August 2002 High-resolution radar ranging for multiple targets

Zhen Wang, Peter K. Willett, Yaakov Bar-Shalom, W. Dale Blair

Proceedings Volume 4728, Signal and Data Processing of Small Targets 2002; (2002) https://doi.org/10.1117/12.478497
Event: AeroSense 2002, 2002, Orlando, FL, United States

Abstract

The similarity between the multiple-target radar ranging problem and the multi-user detection problem in CDMA is drawn: in CDMA, users' bits modulate distinct but correlated signature signals; while, in radar, the bits are range-bin occupancies and the signatures correspond to the known transmitted signal translated to be centered on the appropriate range bin. The analogy is useful: there has been a great deal of recent experience in CDMA, and one of the best and fastest algorithms uses a variant of probabilistic data association (PDA, the target-tracking philosophy). PDA can be augmented by group decision feedback (GDF) -- another idea from CDMA -- to refine the target delay estimates; and finally minimum description length (MDL) is applied to estimate the number of targets. Simulation examples are given to illustrate the resolution of closely spaced targets within what would normally be thought the same range bin. Its performance is also compared with the Cramer-Rao lower bound (CRLB) and the alternating projection (AP) algorithm.

Citation Download Citation

Zhen Wang, Peter K. Willett, Yaakov Bar-Shalom, and W. Dale Blair "High-resolution radar ranging for multiple targets", Proc. SPIE 4728, Signal and Data Processing of Small Targets 2002, (7 August 2002); https://doi.org/10.1117/12.478497

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