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Sensors 2016, 16(11), 1972; doi:10.3390/s16111972

Identification-While-Scanning of a Multi-Aircraft Formation Based on Sparse Recovery for Narrowband Radar

1
School of Information and Electronics, Beijing Institute of Technology, Beijing 100081, China
2
Department of Electronic Engineering, Tsinghua University, Beijing 100084, China
*
Author to whom correspondence should be addressed.
Academic Editor: Changzhi Li
Received: 18 July 2016 / Revised: 26 September 2016 / Accepted: 18 November 2016 / Published: 23 November 2016
(This article belongs to the Special Issue Non-Contact Sensing)
View Full-Text   |   Download PDF [2065 KB, uploaded 23 November 2016]   |  

Abstract

It is known that the identification performance of a multi-aircraft formation (MAF) of narrowband radar mainly depends on the time on target (TOT). To realize the identification task in one rotated scan with limited TOT, the paper proposes a novel identification-while-scanning (IWS) method based on sparse recovery to maintain high rotating speed and super-resolution for MAF identification, simultaneously. First, a multiple chirp signal model is established for MAF in a single scan, where different aircraft may have different Doppler centers and Doppler rates. Second, based on the sparsity of MAF in the Doppler parameter space, a novel hierarchical basis pursuit (HBP) method is proposed to obtain satisfactory sparse recovery performance as well as high computational efficiency. Furthermore, the parameter estimation performance of the proposed IWS identification method is analyzed with respect to recovery condition, signal-to-noise ratio and TOT. It is shown that an MAF can be effectively identified via HBP with a TOT of only about one hundred microseconds for IWS applications. Finally, some numerical experiment results are provided to demonstrate the effectiveness of the proposed method based on both simulated and real measured data. View Full-Text
Keywords: narrowband radar; multi-aircraft formation (MAF); identification-while-scanning (IWS); sparse recovery; hierarchical basis pursuit (HBP) narrowband radar; multi-aircraft formation (MAF); identification-while-scanning (IWS); sparse recovery; hierarchical basis pursuit (HBP)
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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Jiang, Y.; Xu, J.; Peng, S.-B.; Mao, E.-K.; Long, T.; Peng, Y.-N. Identification-While-Scanning of a Multi-Aircraft Formation Based on Sparse Recovery for Narrowband Radar. Sensors 2016, 16, 1972.

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