High Precision Positioning Method of Photoelectric Theodolite in Shooting Range Based on MLE
In order to solve the problems of small range of action and large deviation from the actual position of the target in the current intersection positioning calculation model of the photoelectric theodolite in the shooting range,and to improve the accuracy of target trajectory calculation and the adaptability range of the model,a theodolite spatial measurement error model based on the relationship between target tracking distance and angle measurement error components is established,the weighting coefficients of different plane intersection positio-ning is optimized.Based on the maximum likelihood estimation(MLE)theory,a new and more accurate posi-tioning method is proposed,and an accuracy estimation formula is derived.The impact of intersection angle,tracking distance,and angle measurement accuracy on positioning error is analyzed in detail.Experimental re-sults show that this method is more than twice as suitable for measuring areas and improves positioning accura-cy by 20％compared to current positioning methods.It is more suitable for engineering scenarios such as mul-tiple measurement stations,unequal accuracy,and long-distance tracking,and has promotion value.
MLEphotoelectric theodoliteintersection of different planesweighting coefficientpositioning er-ror
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