摘要
长时间积累用于提高直扩信号的捕获灵敏度。在高动态情形中,积累结果因PN码自关峰的走动而变差,这会带来了积累能量损失和估计偏差。提出了一种基于分段运动补偿的DBZP(Double Block Zero Padding)算法,其中包括两次广义Keystone变换,且对距离走动进行分段补偿。该算法适用于相关和非相关积累。仿真结果表明,该算法能有效地改善捕获精度。
Long-term integration method is used to improve the acquisition When the dynamic is large, the walk of the PN code auto-correlation peak sensitivity for D555 signal. makes the integration result worse, which will bring the integration energy loss and estitnation error. Segmenta tion motion compen- sation based-DBZP （Double Block Zero Padding） algorithm is proposed, which includes twice gener- alized Keystone transforms and segmentation compensation for the range walk. The proposed algorithm is suitable for coherent and non-coherent integration and the simulation results show that it can significantly improve the acquisition sensitivity.
出处
《电子信息对抗技术》
2013年第1期21-25,共5页
Electronic Information Warfare Technology
