DETECTION OF MOVING OBJECTS
Assignee
Filed
Jan 7, 1980
Granted
Apr 21, 1992
Location
MALVERN GB
Abstract
A system for detecting and classifying vehicles, moving in the vicinity of a seismic detector, includes a time threshold circuit and, complementary to this circuit, two parallel amplitude detector circuits. One detector circuit utilizes amplitude thresholding to distinguish the seismic vibrations characteristic of moving vehicles, from other seismic vibrations. The other detector circuit utilizes amplitude thresholding to distinguish the seismic vibrations characteristic of a particular kind of moving vehicle (e.g. a tracked vehicle), from other seismic vibrations. The results of these two amplitude detector circuits and of the time threshold circuit are utilized by an indicator circuit and an indication of detected vehicle kind (e.g. tracked or wheeled) provided. Indication may be relayed, to a remote observer, by radio transmission.
Source: Google Patents
35 USC §181 Secrecy Order
Imposed
Apr 9, 1982
Rescinded
Dec 31, 1990
Duration
8 years, 8 months
Inventor
- 1COLIN E. PYKETT
Record Details
- Patent number
- US 5107250
- Application
- 06116343
- Aerospace match
- Yes
- Dataset source
- 35 USC §181 SO records
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