Impact of Sampling Frequency Offset on Performance of Passive Radar Using Digital TV Signals

WAN Xianrong; CHENG Yiyao; YI Jianxin; ZHANG Xun

doi:10.11999/JEIT170152

Volume 39 Issue 10

Oct. 2017

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Article Navigation > Journal of Electronics & Information Technology > 2017 > 39(10): 2332-2339

WAN Xianrong, CHENG Yiyao, YI Jianxin, ZHANG Xun. Impact of Sampling Frequency Offset on Performance of Passive Radar Using Digital TV Signals[J]. Journal of Electronics & Information Technology, 2017, 39(10): 2332-2339. doi: 10.11999/JEIT170152

Citation:

WAN Xianrong, CHENG Yiyao, YI Jianxin, ZHANG Xun. Impact of Sampling Frequency Offset on Performance of Passive Radar Using Digital TV Signals[J]. Journal of Electronics & Information Technology, 2017, 39(10): 2332-2339. doi: 10.11999/JEIT170152

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Impact of Sampling Frequency Offset on Performance of Passive Radar Using Digital TV Signals

doi: 10.11999/JEIT170152

Funds:

The National Key Research and Development Program (2016YFB0502403), The National Natural Science Foundation of China (61331012, 61371197, U1333106, 61271400), The Science and Technology Division Project of Hubei Province (2015BCE075, 2016CFA061), Postdoctoral Innovation Talent Support Program (BX201600117)

Received Date: 2017-02-24
Rev Recd Date: 2017-05-23
Publish Date: 2017-10-19

Abstract

Abstract

Passive radar makes full use of non-cooperative illumination source to detect targets. Reference signal purification and clutter suppression of the surveillance signal are two key steps to achieve target signal detection. To solve the problem of the sampling frequency offset in digital TV based passive radar, the signal model is first established, and the impact of the sampling frequency offset on the performance of the reference signal reconstruction is analyzed. Then how the sampling frequency offset affects the clutter suppression and the target correlation matching is mainly investigated. The simulation results show that improving the sampling frequency can reduce the symbol error rate of the reconstructed signal. Different temporal clutter suppression algorithms perform differently under the existence of sampling frequency offset. The sampling frequency offset has a greater impact on the temporal clutter rejection performance and less effect on correlation matching. Finally, the analysis results are verified by the measurement data, which also provide theoretical basis on improving the target detection performance of digital TV based passive radar.
- Passive radar,
- Sampling frequency offset,
- Reference signal reconstruction,
- Clutter suppression

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References(24)

References

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