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.
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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