无规则分布多站时差定位方法研究

Location Method by Using TDOA in Ruleless Distributed Multisites

提出了一种在难以获得TDOA测量值误差的先验信息时多基站无规则分布下的时差定位方法——多站组合定位方法。通过将基站分组，利用每组基站的定位结果情况，分为无模糊解、模糊解、无解三类进行处理，计算每类中每组基站的TDOA计算值与TDOA测量值之间的残差为其加权系数，采用不同类的数据组合方法，最终得到定位结果。仿真实验验证了该方法的有效性。

In ruleless distributed multisites, when the TDOA measurement error is difficult to acquire, a TDOA location method - multisites combination location method is advanced in this paper. In this method, the base station（BS） are divided into three classes： unambiguous results, ambiguity results and resuhless ones according to the results of location. The difference between TDOA computed value and TDOA measured value of the BS in each class is computed as the weighted coefficient. And the different data combinative method in each class is adopted to get the final location result. This method is verified by simulation.