基于相位调频参数估计的ISAR跨距离标度

2017 First International Conference on Electronics Instrumentation & Information Systems (EIIS) Pub Date : 2017-06-01 DOI:10.1109/EIIS.2017.8298667

Jianjun Gao, Xinbo Xu, Yong Wang

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引用次数: 3

摘要

针对非合作目标ISAR成像的跨距离标度问题，提出了一种基于相位调频参数估计的分析方法。推导了回波的多普勒表达式，利用解调频率法估计了LFM信号的参数，从而估计了回波信号在纵向距离单元内的频率响应。最后，通过线性拟合计算回波信号的斜率。对雷达回波数据进行计算，得到成像目标转速的估计值。仿真结果与其它经典方法进行了比较，验证了该算法的可行性和时效性。

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Cross-range scaling of ISAR based on phase frequency modulation parameter estimation

To solve the problem of cross-range scaling of noncooperative target ISAR imaging, a corresponding analysis method is proposed based on phase frequency modulation parameter estimation. Doppler expression of the echo is deduced and the demodulation frequency method is used to estimate the parameters of the LFM signal, and then estimation of the frequency response of the echo signal in the longitudinal distance unit can be obtained. Finally, the slope of the echo signal is calculated by linear fitting. The radar echo data can be calculated to obtain the imaging target rotation speed of the estimated value. Simulation results compared with other classic methods confirm the feasibility and timeliness of the algorithm.

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2017 First International Conference on Electronics Instrumentation & Information Systems (EIIS)

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