基于概率的空间三机时差-频差联合定位

Joint Location Using TDOA and FDOA of Three Planes in Space Based on Probability

针对传统泰勒展开定位算法的定位精度不高问题,提出了一种基于概率理论的时差(TDOA)与频差(FDOA)联合定位的新方法,该方法利用到达三机的时差和频差构建非线性方程组,通过概率算法将非线性方程组转化为线性方程组,求解可得目标的估计位置。仿真表明,该方法较泰勒展开法相比,有很高的定位精度。

For low accuracy of Taylor-series location, a joint location method, using time-difference- of-arrival （TDOA） and frequency-difference-of-arrival （FDOA） based on probability location algorithm, is presented. Nonlinear equations are proposed in this method, then nonlinear equations are changed into one-order linear equations based on probability theory, the estimated position of the target is achieved according to the linear equations. It can be proved by computer simulations that this method has better accuracy than Taylor-series method.