Subarray‐based time‐delay low sidelobes methods for space‐time coding array

Lan, Lan; Liao, Guisheng; Xu, Jingwei; Zhu, Shengqi; Wang, Zhirui

doi:10.1049/iet-rsn.2017.0496

Cited by 3 publications

(1 citation statement)

References 28 publications

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“…A subarraybased space-time coded array (STCA) was proposed in Ref. [17] to reduce the sidelobe levels. However, such STCA approach will result in a reduced spatial coverage.…”

Section: Introductionmentioning

confidence: 99%

A Single Receive Channel DBF Method for Ultra-Wideband Radar

et al. 2019

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In this paper, we present a space code agility-based single receive channel digital beamforming (DBF) method for ultra-wideband radar. The proposed single channel DBF method outperforms the existing single channel DBF method with a space-time coded array architecture regarding both the angular and the range sidelobe levels by integrating multiple pulses modulated by irrelevant space codes. A frequency-domain equivalent DBF algorithm is also developed. This algorithm is immune to the mismatch between the sampling rate of the recorded signal and the space-time response function of the space-time coded array under ultra-wideband circumstances, in which cases the existing space-time coded array DBF methods will suffer. Moreover, the target motion over multiple pulse repetition intervals (PRIs) is taken into account in the development of the frequency-domain DBF algorithm. Therefore, performance degradation due to target motion is avoided. Numerical simulations verify the effectiveness of the proposed method. INDEX TERMS Digital beamforming (DBF), single receive channel, ultra-wideband radar, space-time coded array, space code agility.

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“…A subarraybased space-time coded array (STCA) was proposed in Ref. [17] to reduce the sidelobe levels. However, such STCA approach will result in a reduced spatial coverage.…”

Section: Introductionmentioning

confidence: 99%