摘要
本文针对调频步进信号高速目标运动估计问题,首先,利用负正调频步进信号,提出一种基于多项式相位变换的加速度和速度估计方法,该方法对加速度实时估计以及对速度进行精确估计;其次,借鉴图像对比度思想,进一步提出一种新的解速度模糊方法;最后,仿真验证了本文方法抗噪性能好、算法简单且运算量小.
To resolve the problem of motion estimation of high speed moving targets about the stepped-frequency Chirp Signal,a acceleration and velocity estimation method based on polynomial phase transform is proposed,with a negative-positive stepped-frequency Chirp Signal.This method can achieve the real-time acceleration and accurate velocity estimation;then a method to resolve velocity ambiguity based on the image contrast is also presented;in the end,simulation results prove the well anti-noise,efficient and real-time performance of proposed methods.
出处
《电子学报》
EI
CAS
CSCD
北大核心
2010年第12期2832-2838,共7页
Acta Electronica Sinica
基金
国家杰出青年科学基金(No.112010404)
武器装备预研基金(No.112010404)
关键词
调频步进信号
高速运动目标
运动估计
速度模糊
stepped-frequency chirp signal
high speed moving target
motion estimation
velocity ambiguity
