Moving target indication (MTI) is a mode of operation of a radar to discriminate a target against the clutter. [1] It describes a variety of techniques used for finding moving objects, like an aircraft, and filter out unmoving ones, like hills or trees.

MTI_RadSys2001-6. JW 7/31/2008 • Moving Target Indicator (MTI) and Pulse-Doppler (PD) processing use Doppler to reject clutter and enhance detection of moving targets • Smaller targets require more clutter suppression. Birds

2022年11月14日 · mti 动目标指示技术是一种基于多普勒效应的雷达信号处理方法。通过对雷达回波进行频域滤波，mti 技术能够抑制固定目标和慢速杂波，从而实现对运动目标的检测和跟踪。mti 技术的关键在于高通滤波器的设计和实现。

For this purpose, Radar uses the principle of Doppler Effect for distinguishing the non-stationary targets from stationary objects. This type of Radar is called Moving Target Indicator Radar or simply, MTI Radar. According to Doppler effect, the frequency of the received signal will increase if the target is moving towards the direction of Radar.

There are two basic types of MTI radars, namely coherent and non-coherent MTI. The coherent MTI radar differentiates moving targets from stationary targets by using the Doppler shift passed on to the reflected signal by a moving target.

A moving target indicator (MTI) radar in which the pulse repetition frequency (prf), denoted by f p, is low enough to have no range ambiguities; i.e., its maximum unambiguous range R unam = c/2 f p. On the other hand, the MTI radar has ambiguities in doppler and many blind speeds (due to doppler frequency ambiguities) where moving targets are ...

With regard to radar, high gain and narrow beams are desirable for long detection and tracking ranges and accurate direction measurement. The minimum received power that the radar receiver can "sense" is referred to a the minimum detectable signal (MDS) and is denoted Smin .

An MTI radar exploits the relatively high Doppler frequencies of moving targets to suppress clutter echoes, which usually have zero or very low Doppler frequencies. A typical MTI radar uses a high-pass filter to remove energy at low Doppler frequencies.

In this lecture, we present the principles of space-time adaptive processing (STAP) for radar, applied to moving target indication. We discuss the properties of optimum STAP, as well as problems associated with estimating the adaptive weights not encountered with spatial-only processing (i.e. beamforming).

2024年9月6日 · MTI（动目标显示） 是指利用 杂波抑制滤波器来抑制杂波，提高雷达信号的信杂比，以利于运动 目标检测 的技术。 杂波谱通常集中在直流分量和雷达重复频率的整数倍处，而MTI 滤波器 利用杂波与运动目标的多普勒频率的差异，使得滤波器的频率响应在直流和PRF 的整数倍处具有较深的阻带，而在其他频点的抑制较弱，从而通过较深的“凹口”抑制静止目标和静物杂波。 比如采用两脉冲对消器，也称一次对消器。 下面分别是两脉冲和三脉冲对消的MTI滤波 …