To improve the ranging accuracy, a mathematic model based on the least square principle is constructed.
为提高测量精度，建立了基于最小二乘原理的距离修正数学模型。
As an important feature, the characteristics of echo stretching affects SNR of received laser echo signal and ranging accuracy.
脉冲展宽特性是激光回波的重要特性，其影响到回波接收信噪比和测距精度。
Using trigeminy tripod method weakens instrument center deviation and target partiality error, thereby improve wire goniometry and ranging accuracy.
运用三联脚架法减弱仪器对中误差和目标偏心误差，从而提高导线测角和测距精度。
Filter performance has a significant effect on ranging accuracy of frequency modulation fuze. It is difficult to design high-performance filter directly, and it has poor real-time property.
滤波器性能对调频定距引信测距精度有重要影响，直接设计高性能滤波器实现困难且实时性差。
Through simulations, compared with other similar algorithms, the optimal method enhances greatly the ranging accuracy, the suboptimal method is easier to implement while its performance reduces less.
仿真表明，与同类算法相比，最优门限算法测距精度有较大提升；次优门限算法易于实现，且性能无明显下降。
Through simulations, compared with other similar algorithms, the optimal method enhances greatly the ranging accuracy, the suboptimal method is easier to implement while its performance reduces less.
仿真表明，与同类算法相比，最优门限算法测距精度有较大提升；次优门限算法易于实现，且性能无明显下降。
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