比较了不同类型的弹载定高体制,提出了脉冲激光与重力加速度传感器复合定高的定距原理,并对测距误差进行深入分析,得出其定高精度。对设计出的原理样机进行了实验测试,平台倾斜角度检测实验的结果表明,静态条件下最大角度误差小于0.3°;0～500m定高测试实验的结果表明,测量平均值与实际值最大误差为±2.5m,并且与目标距离无关。 Compared with different types of missile loading and fixing system, this paper puts forward the principle of distance between pulsed laser and gravity acceleration sensor, and analyzes the ranging error deeply and concludes the high precision. Experimental results show that the maximum angle error under static condition is less than 0.3 °. The results of the test from 0 ~ 500m set height show that the maximum error of the measured average value and the actual value is ± 2.5m, and has nothing to do with the target distance.