| Ultra-wideband radar is a new radar system with low interception, anti-jamming, and anti-destroying properties, which presents a huge challenge to the traditional reconnaissance system. In radar electronic warfare, the ability of interception of ultra-wideband radar is more and more important. This paper studies the ultra-wideband radar interception method based on short time Fourier transform and focuses on some key techniques such as signal detection and data storage. Finally the ultra-wideband radar interception receiver with functions of signal detection and data storage is designed and implemented.First of all, this paper introduces the basic principle of ultra-wideband radar signal interception, which mainly includes the analysis of ultra-wideband radar signal and the overall process of ultra-wideband radar signal interception. The analysis of ultra-wideband radar signal mainly introduces the basic concepts and common signal forms of ultra-wideband radar signal, including impulse signal and pulse compression signal. And the overall process of ultra-wideband radar signal interception mainly contains signal detection module and data storage module, etc. Secondly signal detection and data storage method in ultra-wideband radar interception are analyzed in detail. Signal detection mainly includes digital channelized receiver noise estimation, transient response processing technology and cross-channel signal processing. And data storage mainly includes DDR caching technology, optical fiber transmission technology and PCIE transmission technology. Then this paper puts forward an implementation scheme of ultra-wideband radar signal interception receiver according to system requirements. Finally ultra-wideband radar signal interception receiver with functions of signal detection and data storage is designed and implemented and the test and analysis to the key system functions are carried out. |
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