摘要
提出了一种用于机载双通道SAR的GMTI新算法,将自适应插值算法与多普勒频域DPCA相结合,先分析了新算法的原理,然后以一个距离误差系数不为正整数,并且有加速度存在的载机模型进行仿真。给出了使用新算法后的仿真结果,证明了算法的合理性和可靠性。
At present, the movement instability of the radar platform and the distance error coefficient departs from a natural number, are the two main reasons which conduce the quality of clutter- suppression. A new GMTI real- time Algorithm used for Airborne Dual- Channel SAR will be presented in this paper, which has the advantages of both the Self- adaptive Interpolation and Doppler range DPCA. After analyzing the principle of this new algorithm ,we would take a simulative aircraft as an example,in which a distance error coefficient departs from a natural number and acceleration existed at the same time. The processing result to simulation data by this new algorithm would be presented. The results proved this method has much better clutter- suppression ability, which is reasonable and reliable.
出处
《航空计算技术》
2008年第4期61-65,共5页
Aeronautical Computing Technique
