Patent ID: 6028823
Filing Date: 2000-02-22
Classification: G01C,G01S,G01V

Abstract:
A method for estimating the geodetic position of an underwater acoustic sensor comprising the steps of:obtaining a slant range R data set for the underwater sensor from a series of signals transmitted to the sensor; andusing the slant range data set to solve for the geodetic position using the expressionR.sub.i =(c.sub.i +b.sub.c)(t.sub.i.sup.a -t.sub.i.sup.e +b.sub.t),where c.sub.i denotes an Effective Sound Velocity (ESV) of the signals, b.sub.c denotes a bias error in the ESV, t.sub.i.sup.a and t.sub.i.sup.e are arrival and emission times of the signal, respectively, and b.sub.t denotes a timing bias error.