SYSTEM FOR DETECTING POSITION OF MOVING BODY

PURPOSE:To easily detect the position of a moving transmission source with high accuracy, by performing measurement, such that the direction of the transmission source of a radio wave is measured on the basis of the level of a radio wave arriving within the shortest time and the directional characte...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	AKEYAMA SATORU, SAKAGAMI SHUJI
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:	PURPOSE:To easily detect the position of a moving transmission source with high accuracy, by performing measurement, such that the direction of the transmission source of a radio wave is measured on the basis of the level of a radio wave arriving within the shortest time and the directional characteristic of an antenna, at two or more places. CONSTITUTION:A modulated ratio wave is transmitted from a moving station 3. The direct wave 1 and reflected wave 2 received by directional antennas 4, 5, 6 are demodulated by receivers 10, 11, 12 and subsequently further subjected to correlation detection by correlation detectors 14, 15, 16. Only the radio wave arriving within the shortest time among the detected radio waves is measured by a level comparator 17. The direction of a radio wave transmission source is detected on the basis of said detected level and the directional characteristics of the antennas 4, 5, 6. The same measurement is performed at two or more places to detect the position of the radio wave transmission source.