本文对非视距环境下的定位技术进行了深入研究，提出了两种非视距误差消除的方案。
We made an intensive study aiming at location technique in NLOS environment and proposed two NLOS error mitigation schemes.
距离测量误差包含测量噪声和非视距误差两部分，其中非视距误差是位置估计的主要误差来源。
The distance measurement errors include errors of measuring noise and non-line of sight, of which NLOS error is the main source of error in location estimation.
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.
且该定位方法不依赖于特定的NLOS误差分布，也无需视距（LOS）和非视距识别。
Moreover, this location method does not depend on a particular distribution of the NLOS error and does not need line-of-sight (LOS) or NLOS identification.
且该定位方法不依赖于特定的NLOS误差分布，也无需视距（LOS）和非视距识别。
Moreover, this location method does not depend on a particular distribution of the NLOS error and does not need line-of-sight (LOS) or NLOS identification.
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