单通道旋转导弹惯导红外空中交班技术研究

Study on Infrared Handoff Technology in Air by Inertial Navigation for Rolling Airframe Missile with Single Channel

对单通道旋转导弹惯导红外交班中的空中截获技术进行了研究。在固定视场角条件下,针对旋转导弹面对的典型目标,对空中红外截获过程中的精度链进行分配,获得惯性制导段的导航误差,并对导航误差进行分解,获得了满足红外导引头半视场角4°且落入概率84%时MEMS陀螺和加速度计的性能指标。选取相应的惯性器件,用误差分析方法获得了雷达测角误差和测距误差引起的截获误差,以及惯导在导航解算中产生的误差。对典型弹道空中截获落入概率进行了计算,结果验证了精度分配的正确性。研究为单通道旋转导弹惯导红外的空中截获技术的工程实现提供了理论依据。

The infrared acquisition technology of handoff in air by inertial navigation for rolling airframe missile was studied in this paper.Under the constant field-of view angle,the accuracy chain in the infrared acquisition was distributed.The navigation error in the inertial guidance phase was obtained.The navigation error was decomposed.The performances of MEMS gyro and accelerometer were obtained which satisfied half field-of view angle 4°of the infrared seeker and hit probability 84%.So the relevant inertial units were determined.The intercept error caused by angle detection error and range detection error of radar and the inertial error in the navigation arithmetic were obtained by error analysis method.The hit probabilities of typical trajectories were calculated.The results had proved that the accuracy distribution was correct.The study has provided a theoretical base for realizing infrared acquisition technology in air by inertial navigation for rolling airframe missile with single channel in engineering.