节点精确定位面临的一个主要问题是信号的非视距传播。
A major problem in Node precise positioning is the non-line of sight signal transmission.
因此，对于对准精度要求并不苛刻的非视距紫外光通信而言，此算法是可行的。
This algorithm, therefore, is feasible for the ultraviolet communication which does not need rigorous pointing accuracy.
在无线传感器网络定位中，节点精确定位面临的一个主要问题是信号的非视距传播，非视距误差是节点定位误差的主要来源。
A key obstacle to high accuracy location is the Non Line of Sight (NLOS) transmission of signal in wireless sensor network node localization. NLOS error is the main source of location error.
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