Communications: directive radio wave systems and devices (e.g. – Transmission through media other than air or free space
Patent
1992-07-14
1994-06-28
Sotomayor, John B.
Communications: directive radio wave systems and devices (e.g.,
Transmission through media other than air or free space
342129, 342194, G01S 1324, G01S 1304
Patent
active
053250958
ABSTRACT:
A stepped frequency ground penetrating radar system is described comprising an RF signal generating section capable of producing stepped frequency signals in spaced and equal increments of time and frequency over a preselected bandwidth which serves as a common RF signal source for both a transmit portion and a receive portion of the system. In the transmit portion of the system the signal is processed into in-phase and quadrature signals which are then amplified and then transmitted toward a target. The reflected signals from the target are then received by a receive antenna and mixed with a reference signal from the common RF signal source in a mixer whose output is then fed through a low pass filter. The DC output, after amplification and demodulation, is digitized and converted into a frequency domain signal by a Fast Fourier Transform. A plot of the frequency domain signals from all of the stepped frequencies broadcast toward and received from the target yields information concerning the range (distance) and cross section (size) of the target.
REFERENCES:
patent: 4218678 (1980-08-01), Fowler et al.
patent: 4381544 (1983-04-01), Stamm
patent: 4435708 (1984-03-01), Kyriakos
patent: 4504833 (1985-03-01), Fowler et al.
patent: 4507602 (1985-03-01), Aguirre
patent: 4620192 (1986-10-01), Collins
patent: 4670753 (1987-06-01), Vacanti
patent: 4677438 (1987-06-01), Michiguchi et al.
patent: 5192952 (1993-03-01), Johler
patent: 5280284 (1994-01-01), Johler
Bashforth Michael B.
Lewallen Tricia S.
Nammath Sharyn R.
Vadnais Kenneth G.
Gaither Roger S.
Moser William R.
Sotomayor John B.
The United States of America as represented by the United States
Valdes Miguel A.
LandOfFree
Stepped frequency ground penetrating radar does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Stepped frequency ground penetrating radar, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Stepped frequency ground penetrating radar will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2379822