Design and performance analysis of inter-pulse frequency coded and intra-pulse linear frequency modulation composite waveform

Yinjuan Fu; Xingyu Liu; Yaoping Zeng

doi:10.1117/12.3023267

28 March 2024 Design and performance analysis of inter-pulse frequency coded and intra-pulse linear frequency modulation composite waveform

Yinjuan Fu, Xingyu Liu, Yaoping Zeng

Author Affiliations +

Proceedings Volume 13091, Fifteenth International Conference on Signal Processing Systems (ICSPS 2023); 1309108 (2024) https://doi.org/10.1117/12.3023267
Event: Fifteenth International Conference on Signal Processing Systems (ICSPS 2023), 2023, Xi’an, China

Abstract

Modern battlefield environment is complex and changeable. In addition to having higher target resolutions, airborne radar should also have good radio frequency (RF) stealth performance such as large time-bandwidth product, low interception factor, low power spectrum density (PSD) amplitude, etc. There are the high distance grating lobes after pulse compression in the large frequency interval of Costas signal. After Costas is modulated by linear frequency modulation, we can obtain the inter-pulse frequency coded and intra-pulse linear frequency modulation (Costas-LFM) signal. Compared with Costas signal with large frequency interval, Costas-LFM signal eliminates distance grating lobes, obtain the large bandwidth, increases the complexity of the intra-pulse frequency modulation features and the difficulty of sorting and identification of the passive detection system. Simulations show that Costas-LFM signal is significantly improved in ambiguity function, autocorrelation function (ACF), PSD and interception factors. While realizing radar detection, the signal also has good RF stealth performance, which has a wide application prospect in modern war.

(2024) Published by SPIE. Downloading of the abstract is permitted for personal use only.

Citation Download Citation

Yinjuan Fu, Xingyu Liu, and Yaoping Zeng "Design and performance analysis of inter-pulse frequency coded and intra-pulse linear frequency modulation composite waveform", Proc. SPIE 13091, Fifteenth International Conference on Signal Processing Systems (ICSPS 2023), 1309108 (28 March 2024); https://doi.org/10.1117/12.3023267

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