Navigation system

A navigation system having a plurality of transmitting stations each of which transmits a sequence of short repeating codes at a fast digital rate and superimposed thereon a long single code at a second slower digital rate, and of a duration equal to the duration of the sequence of short repeating c...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	SIMON JOHN GALE, FRANCIS GILES OVERBURY
Format:	Patent
Sprache:	eng
Schlagworte:	ANALOGOUS ARRANGEMENTS USING OTHER WAVES DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION ORRERADIATION OF RADIO WAVES MEASURING PHYSICS RADIO DIRECTION-FINDING RADIO NAVIGATION TESTING
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Beschreibung
Zusammenfassung:	A navigation system having a plurality of transmitting stations each of which transmits a sequence of short repeating codes at a fast digital rate and superimposed thereon a long single code at a second slower digital rate, and of a duration equal to the duration of the sequence of short repeating codes, such that correlation of the long code in a receiver will yield an unambiguous timing signal relevant to the sequence of short repeating codes. One of said stations may be a master transmitting codes to which transmissions from other stations are locked, and its operation monitored and master status transferred to another station in the event of a fault. Transmitting stations may adjust their frequencies if a receiver detects interference.