And then line shift frequency of TDICCD and exposure time was researched to get the influence of orbit parameters on image.

接着对TDICC D行转移频率与工作曝光时间进行研究，分析了轨道参数对成像的影响。

youdao

In this paper the working principle of the LFM pulse compression radar, and the principles of shift frequency jamming and convolution jamming are analyzed.

本文分析了线性调频脉冲压缩雷达的工作原理、移频干扰原理和卷积干扰原理。

youdao

Based on the fact that a chirp radar signal has a strong coupling between time and velocity, a deceptive jamming technique with shift frequency is proposed.

本文基于线性调频脉压信号在时间和多卜勒频率间存在强耦合的事实，提出用移频干扰实现欺骗干扰的方法。

youdao

And since a moving object causes a tiny change (known as a Doppler shift) in the frequency of the reflected signal, Silent Sentry can also calculate how fast it is moving.

ECONOMIST: Remote sensing

In 1995, a sudden shift in the distribution of North Atlantic temperatures increased hurricane frequency.

FORBES: Climate Change Alarmists Can't Seem To Buy A Major Hurricane