单脉冲成像算法性能分析

ACTA AERONAUTICAET ASTRONAUTICA SINICA ›› 2012, Vol. 33 ›› Issue (10): 1905-1914.

• Avionics and Autocontrol • Previous Articles Next Articles

Performance Evaluation for Monopulse Imaging Algorithm

WU Di, ZHU Daiyin, TIAN Bin, ZHU Zhaoda

College of Electronic and Information Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China

Received:2011-09-14 Revised:2012-02-05 Online:2012-10-25 Published:2012-10-25
Supported by:
Defense Industrial Technology Development Program (B2520110008); National Natural Science Foundation of China (61071165); Program for New Century Excellent Talents in University (NCET-09-0069); China Postdoctoral Science Foundation (2012M511750); The Fundamental Research Funds for the Central Universities (NS2012097)

Abstract

Abstract: Monopluse is a technique by which information concerning the angular location of a target is obtained by comparison of signals received in multi-channels. By introducing monopulse into the procedure of radar imaging, the definition concerning the forward-looking area is significantly improved, which can hardly be achieved by syntheic aperture radar (SAR) or Doppler beam sharpening (DBS). This paper concentrates on the method for evaluating the quality of images generated via the monopulse imaging algorithm. Based on the probability density function of the monopulse ratio, three criterions, i.e., the image position distortion, resolution and signal-to-noise ratio of the target to be imaged, are proposed. Parameters of the system and external environment determining the proposed criterions are analyzed, and the ways to calculate the criterions are provided. Simulation results obtained via numerical integration as well as Monte-Carlo method verify the presented theories.

Key words: radar imaging, monopulse, sum and difference beam, resolution, signal-to-noise ratio (SNR)

CLC Number:

V243
TN958.4

WU Di, ZHU Daiyin, TIAN Bin, ZHU Zhaoda. Performance Evaluation for Monopulse Imaging Algorithm[J]. ACTA AERONAUTICAET ASTRONAUTICA SINICA, 2012, 33(10): 1905-1914.

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Performance Evaluation for Monopulse Imaging Algorithm

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