Based on the theoretical mathematical procedure, investigating the application of the Taylor -Series method in bearings-only TMA.

The purification methods of ten main single minerals in Dajishan Tungsten Mine is introduced,they arewolframite,scheelite,chalcopyrite,pyrite,galena,sphalerite,pyrrhotine,magnetite,arsenopyrite and cassiterite.

Application of nonlinear least square based on genetic algorithms in bearings-only target motion analysis;

Algorithms of bearings-only target motion analysis by two observers;

Algorithm study of anti-outliers for bistatic bearings-only target tracking;

For overcoming the shortcoming of extended Kalman filter,the paper applies unscented Kalman filter on bearing-only target tracking problem.

This paper puts forward a new linear model for bearing-only single-target tracking problem, discusses its observability, gives its solution of filtering and analytic solution of discrete-time system.

The UPF algorithm was studied, and a simulation example about bearing-only target tracking was brought forward.

Bearing only target tracking, or target motion analysis (TMA), is a classic problem of estimating the target motion state (such as position, velocity etc.

It focuses on Bearing-only method of submarine, and have important theory and utility meaning in constructing and developing naval equipment.