Inverse synthetic aperture radar (ISAR) imaging is one of the important high- resolution radar applications for moving target detection and identification. The radial velocity, radial acceleration, and acceleration rate of maneuvering targets can cause range cell migration and Doppler variation in the received signals, which will degrade the imaging quality. Therefore, these parameters should be estimated and compensated before imaging. In low signal-to-noise ratio (SNR) conditions, the conventional motion parameter estimation and compensation algorithms for maneuvering targets do not work properly. To effectively detect and identify the maneuvering targets in low SNR conditions, a new radar imaging algorithm is proposed. The major contributions are as follows: 1) a novel algorithm for envelope migration correction is proposed with adjacent cross correlation function; 2) the target's motion parameters are estimated with the operations of Keystone transform and time-frequency transform to the adjacent cross correlation; 3) a theoretical analysis of the impact of motion parameters on the envelope migration is made, then cross-range phase estimation with the adjacent cross function is presented; 4) based on the estimated motion parameters of targets, a new algorithm for high-resolution ISAR imaging is developed.


    Access

    Check access

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    A New Algorithm of ISAR Imaging for Maneuvering Targets with Low SNR


    Contributors:
    Yachao Li, (author) / Mengdao Xing, (author) / Junhai Su, (author) / Yinghui Quan, (author) / Zheng Bao, (author)


    Publication date :

    2013-01-01


    Size :

    5511736 byte




    Type of media :

    Article (Journal)


    Type of material :

    Electronic Resource


    Language :

    English



    Phase adjustment and isar imaging of maneuvering targets with sparse apertures

    Lei Zhang, / Jia Duan, / Zhi-Jun Qiao, et al. | IEEE | 2014


    Time-frequency approaches to ISAR imaging of maneuvering targets and their limitations

    Zheng Bao / Sun, Changyin / Xing, Mengdao | Tema Archive | 2001



    Accurate ISAR Scaling for Both Smooth and Maneuvering Targets

    Sibo, Sun / Xinyu, Zhang / Guangpu, Zhang et al. | IEEE | 2019