Target identification and signal processing of millimeter-wave

In this process, the control of DSP is the most critical, which controls the dual-channel analog/digital converter to transform the signal of millimeter wave radar in the first half cycle of one clock, whereas the signal of millimeter wave radiometer in the last half cycle. When the signal processing and target identification is finished, the results are returned to the high-speed memory, or to the computer display through the general serial interface of DSP. Regarding to passive detection and identification, 12-bit high-speed A/D converter in TMS320LF2812, of which the highest sampling conversion time is 80 ns, is used to distance ranging, feature extraction and target identification of MMV targets. The outputs of MMW high-stability oscillator, which go by the modulator, pour into the millimeter wave power amplifier. In the receiver mixer, echo signal and high-stable original signal are mixed to produce the difference frequency signal.