Range Ambiguity Suppression Based on Two-dimensional Phase Coding

LI Jian; SUN Guangcai; JING Guobin; XING Mengdao

doi:10.11999/JEIT161056

Volume 39 Issue 9

Sep. 2017

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Article Navigation > Journal of Electronics & Information Technology > 2017 > 39(9): 2190-2196

LI Jian, SUN Guangcai, JING Guobin, XING Mengdao. Range Ambiguity Suppression Based on Two-dimensional Phase Coding[J]. Journal of Electronics & Information Technology, 2017, 39(9): 2190-2196. doi: 10.11999/JEIT161056

Citation:

LI Jian, SUN Guangcai, JING Guobin, XING Mengdao. Range Ambiguity Suppression Based on Two-dimensional Phase Coding[J]. Journal of Electronics & Information Technology, 2017, 39(9): 2190-2196. doi: 10.11999/JEIT161056

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Range Ambiguity Suppression Based on Two-dimensional Phase Coding

doi: 10.11999/JEIT161056 cstr: 32379.14.JEIT161056

Funds:

The AeroSpace T.T..C. Innovation Program (201509A), The Major Research Plan of the National Natural Science Foundation of China (91438106)

Received Date: 2016-10-12
Rev Recd Date: 2017-05-22
Publish Date: 2017-09-19

Abstract

Abstract

Based on a two-dimensional phase coding, a novel range ambiguity suppression method is proposed. By transmitting two-dimensional phase coded signals and demodulating the received signals, the two-dimensional spectrum of the range ambiguity is shifted along both range and azimuth directions. Considering the range frequency and Doppler oversampling, the spectrum of the range ambiguity located outside the data region of spectral support can be filtered out, which suppresses the range ambiguity. It allows for decreasing of the Range Ambiguity to Signal Ratio (RASR) and upgrading of the SAR image quality. Simulation results for point targets and distributed targets validate the effectiveness of the proposed method.
- SAR,
- Range ambiguity,
- Range Ambiguity to Signal Ratio (RASR),
- Phase coding

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References(21)

References

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