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相干红外雷达作为军用传感器有许多优点。首先,红外雷达的波长(10μm)比微波或毫米波系统的短,因此角分辨率高,可用小的天线。例如,波长10μm的雷达若用10cm孔径,其角分辨率可达～100μrad,这相当于人视觉分辨能力。由此可以获得高精度的瞄准和跟踪。第二,因红外雷达频率高,可得到的多普勒频移大。例如,波长10μm的雷达,由速度1km/h的目标所引起的多普勒频移为53kHz。第三,因频率高可使系统带宽高达1GHz,波长10μm的雷达很容易获得脉宽小于100ns的脉冲,从而获得高的距离分辨率。第
Coherent infrared radar has many advantages as a military sensor. First, the infrared radar's wavelength (10μm) is shorter than that of a microwave or millimeter-wave system, so the angular resolution is high and small antennas are available. For example, a 10-μm aperture for a 10-μm wavelength radar has an angular resolution of ~ 100 μrad, which is equivalent to human visual resolution. This allows high-precision aiming and tracking. Second, due to the high frequency of the infrared radar, the Doppler shift can be large. For example, a radar with a wavelength of 10 μm has a Doppler shift caused by a target of 1 km / h at 53 kHz. Thirdly, because of the high frequency, the system bandwidth can be up to 1GHz. The radar with the wavelength of 10μm can easily obtain the pulse whose pulse width is less than 100ns to obtain the high range resolution. No.