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A Novel Dynamic Programming Algorithm for Track-Before-Detect in Radar Systems

2013; Institute of Electrical and Electronics Engineers; Volume: 61; Issue: 10 Linguagem: Inglês

10.1109/tsp.2013.2251338

1941-0476

Emanuele Grossi, Marco Lops, Luca Venturino,

Wireless Signal Modulation Classification

In this paper we present a novel procedure for multi-frame detection in radar systems. The proposed architecture consists of a pre-processing stage, which extracts a set of candidate alarms (or plots) from the raw data measurements (e.g., this can be the Detector and Plot-Extractor of common radar systems), and a track-before-detect (TBD) processor, which jointly elaborates observations from multiple scans (or frames) and confirms reliable plots. A computationally efficient dynamic programming algorithm for the TBD processor is derived, which does not require a discretization of the state space and operates directly on the input plot-lists. Finally, a simple algorithm to solve possible data association problems arising at the track-formation step is given, and a thorough complexity and performance analysis is provided, showing that large detection gains with respect to the standard radar processing are achievable with negligible complexity increase.