学术
基于Range—Doppler域相位补偿的ATI／DPCA数据配准方法
赵迎辉[1,2] 刘畅[1] 王岩飞[1]
[1]中国科学院电子学研究所,北京100080 [2]中国科学院研究生院,北京100039
摘 要:
合成孔径雷达通过沿航迹干涉（ATI）或天线相位中心偏置（DPCA）技术检测地面运动目标，需要对获得的不同通道数据进行方位向时间配准。该文首先根据测得的雷达参数进行粗配准，而后基于接收数据在Range-Doppler域内通过相位补偿思想精确估计两通道回波数据时间延迟，从而进一步提高数据配准精度。该方法无需插值操作，运算量小，仿真表明性能良好，可以满足实时配准要求。[著者文摘]
文章出处:
《电子与信息学报》-2008年30卷2期 -318-321页
栏目信息:
分 类 号:
文献标识码:
A
文章编号:
1009-5896（2008）02-0318-04
Data Co-registration via Phase Compensation in Range-Doppler Domain for ATI/DPCA System
Zhao Ying-hui, Liu Chang, Wang Yan-fei（1.Institute of Electronics, Chinese Academy of Sciences, Beijing 100080, China;2.Graduate University of the Chinese Academy of Sciences, Beijing 100039, China）
Abstract:
Along-Track Interferometry （ATI） or Displaced Phase Centre Antenna （1）（DPCA） tecnnlque can be applied to detect ground moving targets for airborne and space-based radars. As the first step of data processing, co-registration of the data received from different channels is necessary. In this paper, a new algorithm of data co-registration is proposed. Firstly, the received data is co-registered coarsely according to radar parameters measured primarily. Then in order to improve the co-registration accuracy further, time lag is estimated precisely via phase compensation idea based on the received data in range-Doppler domain. This algorithm does not require interpolation operation, therefore reducing the processing burden. The simulation results demonstrate that this algorithm can meet the real-time co-registration requirement.[著者文摘]
Key words:
Image co-registration; Phase compensation; Time lag
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