期刊
IEEE TRANSACTIONS ON GEOSCIENCE AND REMOTE SENSING
卷 59, 期 8, 页码 6621-6636出版社
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/TGRS.2020.3029384
关键词
Bayesian inference; debris detection and tracking; Ka-band; low pulse repetition frequency (PRF) range and range-rate search (RRRS); monopulse pulse Doppler radar; pause while scan (PWS); radar sensor architecture; space situational awareness (SSA); spaceborne radar (SBR)
This article discusses a novel spaceborne radar payload transceiver for enhancing near-Earth space situational awareness, focusing on sensor data structure and processing strategies.
This article delves into a novel spaceborne radar payload transceiver for augmenting space-based monitoring capabilities for near-Earth space situational awareness. The sensor complex data hypercube structure and sensor timing hierarchies in surveillance mode are addressed along with a suitable low pulse repetition frequency range and range-rate search with a pause while scan collection strategy. A bespoke active electronically scanned array-based Pulse Doppler Radar sensor in the Ka-band is then defined in order to cope with the significant Doppler stress characterizing a burst of echoes from hypervelocity debris targets. Before feeding the onboard Bayesian tracker, the complex data hypercube is processed by means of a Doppler filter bank including pulse compression in cascade with a constant false alarm rate-like block.
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