利用tol和bol进行多基地的定位，最后给出GDOP图(TOL and BOL are used to locate for multi base, and finally the GDOP diagram is given)

用于双基地声纳定位BOL算法的实现，分别测得收发基站的角度，拟合直线，交点坐标即为目标位置。(The BOL algorithm for bistatic sonar positioning is implemented. The angle of base station is measured, the straight line is fitted, and the intersection coordinate is the target position.)