Ultrasonic ranging and data telemetry system

Details Ultrasonic ranging and data telemetry system Ultrasonic ranging and data telemetry system

1989-04-13

1990-05-08

Moskowitz, Nelson

Communications, electrical: acoustic wave systems and devices

Distance or direction finding

2503361, 324329, 364516, G01S 380

Patent

active

049244507

ABSTRACT:
An ultrasonic ranging and data telemetry system determines a surveyor's position and automatically links it with other simultaneously taken survey data. An ultrasonic and radio frequency (rf) transmitter are carried by the surveyor in a backpack. The surveyor's position is determined by calculations that use the measured transmission times of an airborne ultrasonic pulse transmitted from the backpack to two or more prepositioned ultrasonic transceivers. Once a second, rf communications are used both to synchronize the ultrasonic pulse transmission-time measurements and to transmit other simultaneously taken survey data. The rf communications are interpreted by a portable receiver and microcomputer which are brought to the property site. A video display attached to the computer provides real-time visual monitoring of the survey progress and site coverage.

REFERENCES:
patent: 3886553 (1975-05-01), Bates
patent: 4254478 (1981-03-01), Dumas
patent: 4516226 (1985-05-01), Peynaud et al.
patent: 4561064 (1985-12-01), Bruggen et al.
patent: 4719407 (1988-01-01), Converse et al.

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