脉冲激光测距仪的灵敏度是仪器系统内部的探测灵敏度,主要由激光发射系统(发射功率P_t)、接收系统(接收功率P_r)和发射、接收、瞄准三轴平行度等决定,与外部条件无关,它可直接决定其最大测程。 假设图1中激光发射角为θ_t,接收视场角为θ_r,则光束到达R处目标面上的激光功率为P_tK_te~(-αR),在目标面上的照射面积为 The sensitivity of the pulsed laser range finder is the detection sensitivity inside the instrument system, which is mainly determined by the laser transmitting system (transmitting power P_t), receiving system (receiving power P_r) and transmitting, receiving and targeting three-axis parallelism etc., regardless of external conditions , It can directly determine its maximum range. Assuming that the laser emission angle is θ_t and the received field angle is θ_r in Fig. 1, the laser power on the target surface at the point where the beam reaches R is P_tK_te ~ (-αR). The irradiation area on the target surface is