Position-fixing by co-ordinating two or more direction or position line determinations Position-fixing by co-ordinating two or more distance determinations

GPHYSICS G01Measuring instruments G01SRADIO DIRECTION-FINDING RADIO NAVIGATION DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES ANALOGOUS ARRANGEMENTS USING OTHER WAVES

G01S5/00Position-fixing by co-ordinating two or more direction or position line determinations Position-fixing by co-ordinating two or more distance determinations

G01S5/0009Transmission of position information to remote stations G01S5/0018Transmission from mobile station to base station G01S5/0027of actual mobile position G01S5/0036of measured values G01S5/0045Transmission from base station to mobile station G01S5/0054of actual mobile position G01S5/0063of measured values G01S5/0072Transmission between mobile stations G01S5/0081Transmission between base stations G01S5/009Transmission of differential positioning data to mobile G01S5/02using radio waves G01S5/0205Details G01S5/021Calibration, monitoring or correction G01S5/0215interference or multipath issues related to signal reception G01S5/0221of receivers or network of receivers G01S5/0226of transmitters or network of transmitters G01S5/0231Emergency, distress or locator beacons G01S5/0236Receiving assistance data G01S5/0242locating transmitters to be used for positioning G01S5/0247Determination of attitude G01S5/0252by comparing measured values with pre-stored measured or simulated values G01S5/0257Hybrid positioning solutions G01S5/0263employing positioning solutions derived from one of several separate positioning systems G01S5/0268employing positioning solutions derived from a single positioning system G01S5/0273using multipath or indirect path propagation signals in position determination G01S5/0278involving statistical or probabilistic considerations G01S5/0284Relative positioning G01S5/0289of multiple transceivers G01S5/0294Tracking, i.e. predictive filtering G01S5/04Position of source determined by a plurality of spaced direction-finders G01S5/06Position of source determined by co-ordinating a plurality of position lines defined by path-difference measurements G01S5/08Position of single direction-finder fixed by determining direction of a plurality of spaced sources of known location G01S5/10Position of receiver fixed by co-ordinating a plurality of position lines defined by path-difference measurements G01S5/12by co-ordinating position lines of different shape G01S5/14Determining absolute distances from a plurality of spaced points of known location G01S5/145Using a supplementary range measurement G01S5/16using electromagnetic waves other than radio waves G01S5/163Determination of attitude G01S5/166using gamma or X-rays G01S5/18using ultrasonic, sonic, or infrasonic waves G01S5/183Emergency, distress or locator beacons G01S5/186Determination of attitude G01S5/20Position of source determined by a plurality of spaced direction-finders G01S5/22Position of source determined by co-ordinating a plurality of position lines defined by path-difference measurements G01S5/24Position of single direction-finder fixed by determining direction of a plurality of spaced sources of known location G01S5/26Position of receiver fixed by co-ordinating a plurality of position lines defined by path-difference measurements G01S5/28by co-ordinating position lines of different shape G01S5/30Determining absolute distances from a plurality of spaced points of known location