Broadband LFM Continuous Millimeter Wave Signal Emitter for UAV Line Inspection and Obstacle Avoidance Radar

The invention relates to a wide-band linear frequency modulation continuous millimeter-wave signal emitting source of a line patrol obstacle avoidance radar of an unmanned aerial vehicle. The output end of a constant temperature crystal oscillator is connected with a DDS reference signal source and a phase locked dielectric resonator oscillator, and the DDS reference signal source is connected with a control system; the DDS reference signal source is connected with a first filter, a phase locker, a low-pass filter, a voltage-controlled oscillator, a three-power distributor, a frequency multiplier, a first power amplifier and an antenna in sequence; the phase locked dielectric resonator oscillator is connected with a frequency mixer, the output of the frequency mixer is divided into two passages, and one passage is connected with a second filter, a first amplifier and the phase locker; the other passage is connected with the three-power distributor; the three-power distributor is further connected with a receiver to perform equal-energy power distribution; the frequency multiplier multiplies the received signal into 8-millimeter wave band signal, and the signal is emitted through the antenna after being amplified. The wide-band linear frequency modulation continuous millimeter-wave signal emitting source of the line patrol obstacle avoidance radar of the unmanned aerial vehicle is mainly used for a line patrol system of the unmanned aerial vehicle for a power transmission line, is capable of realizing the obstacle avoidance detection (the obstacle comprises a tower, the power transmission line and so on) for the unmanned aerial vehicle, and enables the detection target distance resolution ratio to be improved.