Method and apparatus for using non-linear ground penetrating radar to detect objects located in the ground
First Claim
1. A detection system for detecting objects having electrical non-linear characteristics located underground, the detection system comprising:
- a transmitter unit for transmitting into a ground a first pulsed radio frequency signal at a first frequency generated by a first transmitter and a second pulsed radio frequency signal at a second frequency generated by a second transmitter; and
a receiver for monitoring for a response radio frequency signal having a third frequency equal to a difference between the first frequency and the second frequency, wherein the response radio frequency signal is generated by an object having non-linear conductive characteristics in response to receiving the first pulsed radio frequency signal at the first frequency and the second pulsed radio frequency signal at the second frequency; and
a processor for controlling an operation of the transmitter unit and the receiver, wherein the processor is connected to the transmitter unit and the receiver, and wherein the object is detected when the response radio frequency signal is detected by the receiver.
1 Assignment
0 Petitions
Accused Products
Abstract
A method and apparatus for detecting objects located underground. In one advantageous embodiment, a detection system detects objects having electrical non-linear characteristics located underground. The detection system comprises a transmitter unit, a receiver, and a processor. The transmitter transmits a plurality of pulsed radio frequency signals having a first frequency and a second frequency into a ground. The receiver monitors for a response radio frequency signal having a frequency equal to a difference between the first frequency and a second frequency, wherein the response radio frequency signal is generated by an object having the non-linear conductive characteristics in response to receiving the plurality of electromagnetic signals. The processor is connected to the transmitter unit and the receiver, wherein the processor controls an operation of the transmitter unit and the receiver, wherein the object is detected when the response radio frequency signal is detected by the receiver.
79 Citations
20 Claims
-
1. A detection system for detecting objects having electrical non-linear characteristics located underground, the detection system comprising:
-
a transmitter unit for transmitting into a ground a first pulsed radio frequency signal at a first frequency generated by a first transmitter and a second pulsed radio frequency signal at a second frequency generated by a second transmitter; and a receiver for monitoring for a response radio frequency signal having a third frequency equal to a difference between the first frequency and the second frequency, wherein the response radio frequency signal is generated by an object having non-linear conductive characteristics in response to receiving the first pulsed radio frequency signal at the first frequency and the second pulsed radio frequency signal at the second frequency; and a processor for controlling an operation of the transmitter unit and the receiver, wherein the processor is connected to the transmitter unit and the receiver, and wherein the object is detected when the response radio frequency signal is detected by the receiver. - View Dependent Claims (2, 3)
-
-
4. An apparatus comprising:
-
a transmitter unit for transmitting, into a ground, a first electromagnetic signal having a first frequency and a second electromagnetic signal having a second frequency; and a receiver for monitoring for a third electromagnetic signal having a third frequency equal to a difference between the first frequency and the second frequency in which the frequency is generated by an object having an electrical non-linear conductive characteristic in response to being exposed to the first electromagnetic signal having the first frequency and the second electromagnetic signal having the second frequency, wherein the object is detected when the third electromagnetic signal having the third frequency is detected by the receiver. - View Dependent Claims (5, 6, 7, 8, 9, 10, 11, 12, 13)
-
-
14. A method for detecting an object with electrical non-linear characteristics, the method comprising:
-
transmitting into a ground, a first electromagnetic signal having a first frequency and a second electromagnetic signal having a second frequency; monitoring for a third electromagnetic signal having a third frequency equal to a difference between the first frequency and the second frequency, wherein the third electromagnetic signal is generated by an object in ground having an electrical non-linear characteristic in response to being exposed to the plurality of electromagnetic signals; and detecting the object having the electrical non-linear characteristic when the third electromagnetic signal is detected. - View Dependent Claims (15, 16, 17, 18, 19, 20)
-
Specification