Wide band stepped frequency ground penetrating radar

Patent · Tue Mar 12 04:00:00 EST 1996

OSTI ID:203878

Bashforth, M B; Gardner, D; Patrick, D; Lewallen, T A; Nammath, S R; Painter, K D; Vadnais, K G

A wide band ground penetrating radar system is described embodying a method wherein a series of radio frequency signals is produced by a single radio frequency source and provided to a transmit antenna for transmission to a target and reflection therefrom to a receive antenna. A phase modulator modulates those portions of the radio frequency signals to be transmitted and the reflected modulated signal is combined in a mixer with the original radio frequency signal to produce a resultant signal which is demodulated to produce a series of direct current voltage signals, the envelope of which forms a cosine wave shaped plot which is processed by a Fast Fourier Transform Unit 44 into frequency domain data wherein the position of a preponderant frequency is indicative of distance to the target and magnitude is indicative of the signature of the target. 6 figs.

• Research Organization: EG & G Energy Measurements Inc
• DOE Contract Number: AC08-83NV10282
• Assignee: EG and G Energy Measurements, Inc., Las Vegas, NV (United States)
• Patent Number(s): US 5,499,029/A/
• Application Number: PAN: 8-234,441
• OSTI ID: 203878
• Country of Publication: United States
• Language: English

Related Subjects

44 INSTRUMENTATION
INCLUDING NUCLEAR AND PARTICLE DETECTORS
DESIGN
DETECTION
FREQUENCY MODULATION
OPERATION
RADAR
RADIO EQUIPMENT
RADIOWAVE RADIATION
SIGNAL CONDITIONING
UNDERGROUND FACILITIES