Short range micro-power impulse radar with high resolution swept range gate with damped transmit and receive cavities
Abstract
A radar range finder and hidden object locator is based on ultra-wide band radar with a high resolution swept range gate. The device generates an equivalent time amplitude scan with atypical range of 4 inches to 20 feet, and an analog range resolution as limited by a jitter of on the order of 0.01 inches. A differential sampling receiver is employed to effectively eliminate ringing and other aberrations induced in the receiver by the near proximity of the transmit antenna, so a background subtraction is not needed, simplifying the circuitry while improving performance. Uses of the invention include a replacement of ultrasound devices for fluid level sensing, automotive radar, such as cruise control and parking assistance, hidden object location, such as stud and rebar finding. Also, this technology can be used when positioned over a highway lane to collect vehicle count and speed data for traffic control. Techniques are used to reduce clutter in the receive signal, such as decoupling the receive and transmit cavities by placing a space between them, using conductive or radiative damping elements on the cavities, and using terminating plates on the sides of the openings.
- Inventors:
-
- Livermore, CA
- Issue Date:
- Research Org.:
- Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)
- OSTI Identifier:
- 871668
- Patent Number(s):
- 5774091
- Assignee:
- Regents of University of California (Oakland, CA)
- Patent Classifications (CPCs):
-
G - PHYSICS G01 - MEASURING G01C - MEASURING DISTANCES, LEVELS OR BEARINGS
G - PHYSICS G01 - MEASURING G01F - MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL
- DOE Contract Number:
- W-7405-ENG-48
- Resource Type:
- Patent
- Country of Publication:
- United States
- Language:
- English
- Subject:
- range; micro-power; impulse; radar; resolution; swept; gate; damped; transmit; receive; cavities; finder; hidden; locator; based; ultra-wide; band; device; generates; equivalent; time; amplitude; scan; atypical; inches; 20; feet; analog; limited; jitter; 01; differential; sampling; receiver; employed; effectively; eliminate; ringing; aberrations; induced; near; proximity; antenna; background; subtraction; simplifying; circuitry; improving; performance; replacement; ultrasound; devices; fluid; level; sensing; automotive; cruise; control; parking; assistance; location; stud; rebar; finding; technology; positioned; highway; lane; collect; vehicle; count; speed; data; traffic; techniques; reduce; clutter; signal; decoupling; placing; space; conductive; radiative; damping; elements; terminating; plates; openings; range gate; near proximity; swept range; wide band; impulse radar; resolution swept; level sensing; equivalent time; speed data; transmit antenna; micro-power impulse; sampling receiver; time amplitude; analog range; amplitude scan; radar range; range resolution; range finder; ultra-wide band; effectively eliminate; improving performance; fluid level; band radar; background subtraction; aberrations induced; pulse radar; receive signal; eliminate ringing; device generates; differential sampling; typical range; /342/
Citation Formats
McEwan, Thomas E. Short range micro-power impulse radar with high resolution swept range gate with damped transmit and receive cavities. United States: N. p., 1998.
Web.
McEwan, Thomas E. Short range micro-power impulse radar with high resolution swept range gate with damped transmit and receive cavities. United States.
McEwan, Thomas E. Thu .
"Short range micro-power impulse radar with high resolution swept range gate with damped transmit and receive cavities". United States. https://www.osti.gov/servlets/purl/871668.
@article{osti_871668,
title = {Short range micro-power impulse radar with high resolution swept range gate with damped transmit and receive cavities},
author = {McEwan, Thomas E},
abstractNote = {A radar range finder and hidden object locator is based on ultra-wide band radar with a high resolution swept range gate. The device generates an equivalent time amplitude scan with atypical range of 4 inches to 20 feet, and an analog range resolution as limited by a jitter of on the order of 0.01 inches. A differential sampling receiver is employed to effectively eliminate ringing and other aberrations induced in the receiver by the near proximity of the transmit antenna, so a background subtraction is not needed, simplifying the circuitry while improving performance. Uses of the invention include a replacement of ultrasound devices for fluid level sensing, automotive radar, such as cruise control and parking assistance, hidden object location, such as stud and rebar finding. Also, this technology can be used when positioned over a highway lane to collect vehicle count and speed data for traffic control. Techniques are used to reduce clutter in the receive signal, such as decoupling the receive and transmit cavities by placing a space between them, using conductive or radiative damping elements on the cavities, and using terminating plates on the sides of the openings.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Thu Jan 01 00:00:00 EST 1998},
month = {Thu Jan 01 00:00:00 EST 1998}
}