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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.
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.
针对非视距环境下多站定位方法需要资源量大、成本高且定位精度受非视距传播影响大等问题，本文提出了单站定位的伪目标动态可行域约束法。
A location method aiming at suppressing NLOS errors in cellular networks using single observer is proposed, which is named by pseudo-target dynamic feasible region constraint method.
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