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- Title
Waveform design based on ambiguity function formulation for moving target detection.
- Authors
ZHAO Yinan; SONG Qun; FENG Xiang; WU Zhongjie; ZHAO Zhanfeng
- Abstract
Aiming at traditional waveforms with poor Doppler tollerance, a low anti-interception ability and high range sidelobes for detecting some non-cooperative moving target, the idea of noiselinear frequency modulation (LFM) combined waveform is resorted and their phase sections are connected by utilizing a phase scar factor. Then the fuzzy function map and majorization-minimization (MM) framework are introduced, and further a two-dimensional mapping template is used to optimize some range-Doppler interval therefore, the range-Doppler sidelobe suppression has been a multi-dimensional mathematical problem, the two-dimensional range-Doppler sidelobe suppression problem can be transformed into a high dimensional mathematics problem, by choosing two agency functions to approximate the solution domain of the original problem. The algotithm with cascade relaxation-zoom steps and phase correction, in each literation, could speed up the optimization convergence. simulations show that compared with several traditional algorithms, the phase-modified relaxed-scalar-weighted MM algorithm could achieve better convergence.
- Subjects
AMBIGUITY; MATHEMATICS; SCARS; ALGORITHMS; NONCOOPERATIVE games (Mathematics)
- Publication
Systems Engineering & Electronics, 2020, Vol 42, Issue 2, p263
- ISSN
1001-506X
- Publication type
Article
- DOI
10.3969/j.issn.1001-506X.2020.02.02