Patent ID: 8077088
Filing Date: 2011-12-13
Classification: G01S

Abstract:
1. A method of determining the actual location of an emitter by an array of sensors, each sensor detecting signals from the emitter, comprising the steps of: (a) measuring a set of signals from the emitter at an initial location of the array of sensors to determine data indicative of emitter site location; (b) determining estimates of all emitter site locations possible, within measurement error of the sensor array, associated with the measured data; (c) determining a probability, based on predetermined data, for each possible emitter site location estimates that each possible location estimate is the actual emitter site location; (d) generating an estimate of the actual emitter site location based on the probabilities determined in step (c); (e) moving the array of sensors relative to the emitter; (f) measuring another set of signals from the emitter at the moved array location to determine data indicative of emitter site location; (g) for each emitter site location determined in step (b) predict the data indicative of emitter site location of step (f); (h) associate the measured data indicative of emitter site location of step (f) with the estimates of all emitter site locations of step (b) by utilizing the data of step (g); (i) alter the measured data of step (f) by the data of step (h) to within measurement error of the sensor array; j) generating updated predicted data of emitter site location based on the altered measurement data of step (i); and (k) compare the updated predicted data from step j) with the measured data from step (f) to determine the probability of step (c).