Super-resolution processing for multi-functional LPI waveforms

Zhengzheng Li; Yan Zhang; Shang Wang; Jingxiao Cai

doi:10.1117/12.2050026

29 May 2014 Super-resolution processing for multi-functional LPI waveforms

Zhengzheng Li, Yan Zhang, Shang Wang, Jingxiao Cai

Proceedings Volume 9077, Radar Sensor Technology XVIII; 90770M (2014) https://doi.org/10.1117/12.2050026
Event: SPIE Defense + Security, 2014, Baltimore, MD, United States

Abstract

Super-resolution (SR) is a radar processing technique closely related to the pulse compression (or correlation receiver). There are many super-resolution algorithms developed for the improved range resolution and reduced sidelobe contaminations. Traditionally, the waveforms used for the SR have been either phase-coding (such as LKP3 code, Barker code) or the frequency modulation (chirp, or nonlinear frequency modulation). There are, however, an important class of waveforms which are either random in nature (such as random noise waveform), or randomly modulated for multiple function operations (such as the ADS-B radar signals in [1]). These waveforms have the advantages of low-probability-of-intercept (LPI). If the existing SR techniques can be applied to these waveforms, there will be much more flexibility for using these waveforms in actual sensing missions. Also, SR usually has great advantage that the final output (as estimation of ground truth) is largely independent of the waveform. Such benefits are attractive to many important primary radar applications. In this paper the general introduction of the SR algorithms are provided first, and some implementation considerations are discussed. The selected algorithms are applied to the typical LPI waveforms, and the results are discussed. It is observed that SR algorithms can be reliably used for LPI waveforms, on the other hand, practical considerations should be kept in mind in order to obtain the optimal estimation results.

Citation Download Citation

Zhengzheng Li, Yan Zhang, Shang Wang, and Jingxiao Cai "Super-resolution processing for multi-functional LPI waveforms", Proc. SPIE 9077, Radar Sensor Technology XVIII, 90770M (29 May 2014); https://doi.org/10.1117/12.2050026

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