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Title: Wide band stepped frequency ground penetrating radar

Abstract

A wide band ground penetrating radar system (10) embodying a method wherein a series of radio frequency signals (60) is produced by a single radio frequency source (16) and provided to a transmit antenna (26) for transmission to a target (54) and reflection therefrom to a receive antenna (28). A phase modulator (18) modulates those portion of the radio frequency signals (62) to be transmitted and the reflected modulated signal (62) is combined in a mixer (34) with the original radio frequency signal (60) to produce a resultant signal (53) which is demodulated to produce a series of direct current voltage signals (66) the envelope of which forms a cosine wave shaped plot (68) which is processed by a Fast Fourier Transform unit 44 into frequency domain data (70) wherein the position of a preponderant frequency is indicative of distance to the target (54) and magnitude is indicative of the signature of the target (54).

Inventors:
 [1];  [2];  [2];  [3];  [4];  [5];  [6]
  1. Buellton, CA
  2. Santa Maria, CA
  3. Ventura, CA
  4. Santa Barbara, CA
  5. Goleta, CA
  6. Alexandria, VA
Issue Date:
Research Org.:
EG & G ENERGY MEASUREMENTS INC
OSTI Identifier:
870338
Patent Number(s):
5499029
Assignee:
EG&G Energy Measurements, Inc. (Las Vegas, NV)
DOE Contract Number:  
AC08-83NV10282
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
wide; band; stepped; frequency; ground; penetrating; radar; 10; embodying; method; series; radio; signals; 60; produced; single; source; 16; provided; transmit; antenna; 26; transmission; target; 54; reflection; therefrom; receive; 28; phase; modulator; 18; modulates; portion; 62; transmitted; reflected; modulated; signal; combined; mixer; 34; original; produce; resultant; 53; demodulated; direct; current; voltage; 66; envelope; forms; cosine; wave; shaped; plot; 68; processed; fast; fourier; transform; unit; 44; domain; data; 70; position; preponderant; indicative; distance; magnitude; signature; wide band; frequency signals; penetrating radar; resultant signal; stepped frequency; frequency domain; modulated signal; voltage signal; direct current; radio frequency; fourier transform; receive antenna; sine wave; frequency source; voltage signals; transmit antenna; frequency signal; phase modulator; ground penetrating; fast fourier; frequency ground; current voltage; cosine wave; /342/

Citation Formats

Bashforth, Michael B, Gardner, Duane, Patrick, Douglas, Lewallen, Tricia A, Nammath, Sharyn R, Painter, Kelly D, and Vadnais, Kenneth G. Wide band stepped frequency ground penetrating radar. United States: N. p., 1996. Web.
Bashforth, Michael B, Gardner, Duane, Patrick, Douglas, Lewallen, Tricia A, Nammath, Sharyn R, Painter, Kelly D, & Vadnais, Kenneth G. Wide band stepped frequency ground penetrating radar. United States.
Bashforth, Michael B, Gardner, Duane, Patrick, Douglas, Lewallen, Tricia A, Nammath, Sharyn R, Painter, Kelly D, and Vadnais, Kenneth G. Mon . "Wide band stepped frequency ground penetrating radar". United States. https://www.osti.gov/servlets/purl/870338.
@article{osti_870338,
title = {Wide band stepped frequency ground penetrating radar},
author = {Bashforth, Michael B and Gardner, Duane and Patrick, Douglas and Lewallen, Tricia A and Nammath, Sharyn R and Painter, Kelly D and Vadnais, Kenneth G},
abstractNote = {A wide band ground penetrating radar system (10) embodying a method wherein a series of radio frequency signals (60) is produced by a single radio frequency source (16) and provided to a transmit antenna (26) for transmission to a target (54) and reflection therefrom to a receive antenna (28). A phase modulator (18) modulates those portion of the radio frequency signals (62) to be transmitted and the reflected modulated signal (62) is combined in a mixer (34) with the original radio frequency signal (60) to produce a resultant signal (53) which is demodulated to produce a series of direct current voltage signals (66) the envelope of which forms a cosine wave shaped plot (68) which is processed by a Fast Fourier Transform unit 44 into frequency domain data (70) wherein the position of a preponderant frequency is indicative of distance to the target (54) and magnitude is indicative of the signature of the target (54).},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1996},
month = {1}
}

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