contraction time

The time delay-time stretch effect of wide-band extension target and the time-frequency domain characteristics of LFM signal are analyzed.

分析了宽带延展目标的时延-时间伸缩效应及其导致的回波信号在时域和频率域的特性;针对LFM信号的时频分布特点,利用WVD和Radon联合变换技术,提取LFM信号在时-频域分布上的特性参数,提出了一种宽带延展目标回波参数提取方法,得到了目标的时延—时间伸缩分布。

Motion parameters are estimated by analysing characteristics of multi echoes time delay-time stretch images.

提出了一种基于图像熵技术的匀速运动目标多脉冲宽带时延-时间伸缩成像方法。

A wide-band acoustic imaging approach of underwater target based on time delay-time stretch model is presented.

提出了一种基于宽带时延-时间伸缩的目标几何像求解方法。