Phased array acoustic antenna
A system for remote measurement of wind velocity in the atmosphere, operating from ground level. An array of acoustic transducer elements which provide for transmitting a beam of acoustic energy along a path and receiving such transmitted energy as scattered by wind in the path. The system includes signal transmitting means for driving the arrays, and signal receiving means, with a switching system for connecting the elements of the array to the transmitting means and to the receiving means, for operation as a monostatic system. Phase control for the transmitted signals comprising phase shifters and switches for selectively connecting driving signals to the elements of the array for driving selected elements at different phases to produce first, second and third beams in sequence at three different predetermined angles from a single antenna.
- Assignee:
- Xontech, Inc.
- Patent Number(s):
- US 4558594
- OSTI ID:
- 5886682
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
Atmospheric-- Chemicals Monitoring & Transport-- (-1989)
54 ENVIRONMENTAL SCIENCES
ACOUSTIC MEASUREMENTS
AIR POLLUTION MONITORS
ANTENNAS
COMMUNICATIONS
DATA TRANSMISSION
DESIGN
DOPPLER EFFECT
ELECTRICAL EQUIPMENT
EQUIPMENT
MEASURING INSTRUMENTS
MONITORS
PHASE SHIFT
REMOTE SENSING
SOUND WAVES
VELOCIMETERS
VELOCITY
WAVE PROPAGATION
WIND