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Class Information
Number: 342/394
Name: Communications: directive radio wave systems and devices (e.g., radar, radio navigation) > Directive > Beacon or receiver > With transmisson of bearing or position determinative signals > Iso-phase type
Description: Subject matter wherein a distinctive signal or pulse in emitted by one radiating station and a similar signal or pulse (bearing a know, fixed phase relationship to the first signal or pulse) is emitted by a second remote radiating station, and wherein both are received and compared as to their phase relationship by a receiving station to provide a measure of the difference in distance between each radiating station and the receiving station, thereby enabling the fixing of the receiving station position along a known hyperbola or hyperboloid which are the loci of all points in space having a constant difference in distances to the radiating stations.










Sub-classes under this class:

Class Number Class Name Patents
342/397 Decca 6
342/396 Omega 17
342/395 With hetrodyne synchronization 3


Patents under this class:

Patent Number Title Of Patent Date Issued
8566022 Managing use of location-identification services Oct. 22, 2013
8159395 Communication device, communication system, position detection method and program Apr. 17, 2012
6697630 Automatic location identification system comparing stored field strength data and an actual cellular call's field strength Feb. 24, 2004
6097338 Instrument landing system glide path transmitter device Aug. 1, 2000
5999129 Multiplatform ambiguous phase circle and TDOA protection emitter location Dec. 7, 1999
5280295 Navigation and positioning system and method using uncoordinated beacon signals Jan. 18, 1994
5173710 Navigation and positioning system and method using uncoordinated beacon signals Dec. 22, 1992
4855962 Method and system for locating and correcting the orientation of an autonomous mobile object and a non-autonomous mobile object Aug. 8, 1989
4797679 Radio direction-finding using time of arrival measurements Jan. 10, 1989
4739333 Single channel distance measuring receiver system and method Apr. 19, 1988
4675684 Distance measuring receiver system and method Jun. 23, 1987
4672383 Craft guidance system Jun. 9, 1987
H292 Apparatus for the detection of angles-of-arrival of radio frequency signals Jun. 2, 1987
4646096 Enhanced global positioning system Delta-Range processing Feb. 24, 1987
4626860 Passive synthetic aperture system for imaging a source of electromagnetic radiation Dec. 2, 1986
4562437 Digital loop filter Dec. 31, 1985
4547777 Method of radio-position-finding through determination of phases of electromagnetic waves and receiving device for practicing the method Oct. 15, 1985
4532637 Differential receiver Jul. 30, 1985
4496951 Hyperbolic navigation receiver Jan. 29, 1985
4490722 Radio navigation system Dec. 25, 1984
4472720 Area navigational system using geosynchronous satellites Sep. 18, 1984
4442432 Electronic navigation method and system Apr. 10, 1984
4387375 Transmitter for a navigation system Jun. 7, 1983
4307401 Two-channel receiver-indicator for phase radio systems Dec. 22, 1981
4114155 Position determining apparatus and method Sep. 12, 1978
4106022 Radio position-determining system Aug. 8, 1978
4063244 Receiver/timing apparatus for a single frequency, time-shared positioning system Dec. 13, 1977
3983559 Novel structure for radio position fixing using hyperbolic phase measurement Sep. 28, 1976
3968493 Digital phase comparators Jul. 6, 1976
3967277 Radio navigation system Jun. 29, 1976
3936828 VLF navigation system Feb. 3, 1976
3936827 Secure hyperbolic guidance using noise signals and correlation detection Feb. 3, 1976











 
 
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