Novel spread-spectrum radar waveform

Yiding Wang; Xingguo Li; Yunhong Wang

doi:10.1117/12.276100

10 June 1997 Novel spread-spectrum radar waveform

Yiding Wang, Xingguo Li, Yunhong Wang

Proceedings Volume 3066, Radar Sensor Technology II; (1997) https://doi.org/10.1117/12.276100
Event: AeroSense '97, 1997, Orlando, FL, United States

Abstract

This paper studies the relationship between high range resolution and signal bandwidth. In order to generate big bandwidth, a novel spread spectrum radar waveform is present in this paper. This paper derives the ambiguous function of intrapulse and interpulse FM radar waveform. The result proves that this kind of waveform stimulus is of big time duration and big bandwidth. This waveform trades off the drawback of interpulse stepped frequency waveform in range resolution. There is not range ambiguous problem in time domain. According to the distinguishing feature of this kind of waveform, a novel two-stage pulse compression system using surface acoustic wave (SAW) device is put forward. It aims to generate a intrapulse rectangular spectrum by means of SAW device. Then, the system can obtain spread rectangular spectrum using interpulse frequency shifting. After matched pulse compression processing, this waveform holds high resolution in range domain and in velocity domain. The system total compression ratio can be controlled by the intrapulse compression ratio and interpulse compression ratio.

Citation Download Citation

Yiding Wang, Xingguo Li, and Yunhong Wang "Novel spread-spectrum radar waveform", Proc. SPIE 3066, Radar Sensor Technology II, (10 June 1997); https://doi.org/10.1117/12.276100

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