同波束干涉测量在月面相对定位中的应用

基于同波束干涉测量原理和观测模型,针对月面目标特性,推导了给定着陆器先验位置的差分时延、差分时延率观测方程。引入指定高程约束、月球数字地形模型等约束方程,提出巡视器相对位置确定的卡尔曼滤波算法。通过仿真数据进行了验证和评估,表明该算法可快速、较高精度地确定月面巡视器相对着陆器的位置。

Application of the Same Beam Interferometry Measurement in Relative Position Determination on Lunar Surface

Based on the principle and observation model of the same beam interferometry measurement, observation equations of differential time delay and time delay rate for targets on lunar surface are proposed.Restriction of appointed height and digital lunar height model is introduced and a Kalman filter with restriction to determine the relative position is put forward.By data simulation,the arithmetic is then validated and evaluated,which could fleetly and accurately determine the relative position between rover and lander.Low precision of the lander’s position is required in the calculation.