一种目标空间位置高精度算法的研究与嵌入式系统实现

The Research and Engineering Realization for a Certain High Precision Arithmetic of the Target Space Position

要实现对价值点目标的精确打击,必须解决空间无人飞行器和欲攻击的点目标实时交会对准问题。激光制导是通过在寻的器追踪平台上安放激光探测器,在平台外部安放合作目标与被攻击目标建立了解算联系。利用四象限激光探测器作为目标位置传感器,对其特性、工作原理、解算理论做了深入分析,对于经典的和差比幅归一化算法,将隐含的算法误差数学函数关系显式化,得到解算误差曲线和规律,提出了分区间采用不同的解算规律——尤其是对相对误差较大,严重影响制导精度的区域采用查表算法以提高解算精度的工程化实现策略。具有很好的应用价值。

To fulfill the task of precisely attacking valuepoint target, pointing problem between the space pilotless vehicle and point target must be solved. Laser guidance is a way to place the laser detector in the tracker and the cooperative device out of the tracker simultaneously to keep in touch with the target to be attacked for calculation. A four-quadrant （4Q） laser detector is used as the position sensitive detector（PSD） in a sensor,a profound study of detector＇s characteristic.the operational principle and the calculation theory is provided. The error curve and rule is gained by making the implied arithmetic error function unfolded for the classical normalization arithmetic of sum-difference divided by amplitirude. Different arithmetic rule is put forward for different district-especially for the big relative error and guidance precision infected seriously.an inquiring arithmetic is presented in order to improve the guidance precision. It has a good value for application.