Stepped frequency ground penetrating radar
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 receiver 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. 12 figures.
- Assignee:
- Dept. of Energy, Washington, DC (United States)
- Patent Number(s):
- US 5325095; A
- Application Number:
- PPN: US 7-913494
- OSTI ID:
- 7083301
- Resource Relation:
- Patent File Date: 14 Jul 1992
- Country of Publication:
- United States
- Language:
- English
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