2) range walk
距离走动
1.
The high squint SAR echoes can be compressed in range and azimuth separately according to their high range walk and small range curvature.
根据机载斜视SAR回波信号大距离走动小距离弯曲的特点,在时域校距离走动,这样距离和方位两维压缩可独立进行。
3) range migration
距离走动
1.
In terms of analyzing the cause of range migration in moving target echo signal, a sort of compensation method for the migration is proposed, which can be used for Doppler frequency blind estimation of the target under the low ratio of signal-to-noise and compensating its range migration.
分析动目标回波产生距离走动的原因,提出了一种距离走动校正方法,该方法可以在小信噪比条件下对目标的多普勒频率盲估,并对其距离走动进行校正。
2.
According to the design principle of conventional PD(Pulse Doppler) radar,target s range migration can t exceed half of the range resolution cell in coherent integration time,which means that the accumulation time is restrained by target s motion.
根据传统PD雷达的设计原则,在相参积累时间内,目标的距离走动不能超过半个距离单元,也就是说相参积累时间受限于目标运动。
3.
Keystone transform has been employed to remove range migration in high resolution range bins of moving targets among different stepped-frequency frames,and a new signal processing method using multi-frame stepped-frequency signals is analyzed and evaluated,with which high resolution range-velocity image of moving targets can be achieved.
针对运动目标在步进帧间跨高分辨距离单元走动的问题,提出了基于Keystone变换的解决方案来补偿运动目标帧间距离走动造成的影响,并分析了利用多帧步进频信号实现运动目标距离-速度二维高分辨检测的信号处理方法及算法性能。
4) range migration rate
距离走动率
5) mobile range gate
移动距离门
6) motion through resolution cell error
距离走动误差
1.
The recently proposed super resolution radar imaging algorithms, which are based on the 2-D sinusoid signalmodel,often suffer from the motion through resolution cell error(MTRC) and failed completely.
现有的雷达成像超分辨算法是基于目标回波信号的二维正弦信号模型，所以模型误差，特别是距离走动误差，将使算法性能严重下降或失效、为此，本文采用距离走动误差下的一阶近似雷达成像二维信号模型，提出了一种基于非线性最小二乘准则的参数化超分辨算法在算法中，距离走动误差补偿与目标参量估计联合进行文中同时给出了算法估计性能的Cramer－Rao界及仿真结
补充资料：距离
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