1. DVB-T Signal Cross-Ambiguity Functions Improvement for Passive Radar
- Author
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Tao Shao, Zhiwen Gao, Ran Tao, and Yongfeng Ma
- Subjects
Engineering ,business.industry ,media_common.quotation_subject ,Ambiguity ,Signal ,Passive radar ,Guard interval ,Digital Video Broadcasting ,Electronic engineering ,DVB-T ,business ,Realization (systems) ,media_common ,Communication channel - Abstract
This paper proposes a digital video broadcasting-terrestrial (DVB-T) signal cross-ambiguity functions (CAF) improvement technique by modifying the guard interval and the pilots in the direct channel, which can remove the unwanted deterministic peaks in the DVB-T passive radar effectively. The key of CAF improvement is the pilots modification directly on the pilot carriers based on the DVB-T signal (fs=64/7 MHz), which reduces the computation complexity and is convenient for realization as compared with the conventional filters and equalizers. The DVB-T signal is acquired by the experiments (fs =64/7 MHz). A thumbtack CAF is achieved at the expense of 13.4% power loss (-0.6 dB)
- Published
- 2006