Ground penetrating radar array and timing circuit
First Claim
1. An apparatus for identifying a buried object using array-based ground penetrating radar having a control device, a plurality of transmit antennas, and a plurality of receive antennas, said control device receiving a transmit timing input signal and a receive timing input signal, said apparatus comprising:
- a first delay circuit receiving the transmit timing input signal and generating a number of intermediate transmit timing signals delayed with respect to each other by a delay time;
transmit output switch circuit to select either the transmit timing input signal or a corresponding one of the intermediate transmit timing signals as a corresponding output transmit timing signal;
a second delay circuit receiving the receive timing input signal and generating a number of intermediate receive timing signals delayed with respect to each other by the delay time;
a shift-delay circuit coupled to the second delay circuit and the receive timing input signal to add the delay time to the intermediate receive timing signals; and
receive output switch circuit to select either the receive timing input signal or a corresponding one of the intermediate receive timing signals as a corresponding output receive timing signal.
2 Assignments
0 Petitions
Accused Products
Abstract
Methods and systems consistent with this invention identify a buried object using array-based ground penetrating radar having a control device, a plurality of transmit antennas, and a plurality of receive antennas. Such methods and systems receive a transmit timing input signal and a receive timing input signal. Such methods and systems comprise a first delay circuit for receiving the transmit timing input signal and generating a number of intermediate transmit timing signals delayed with respect to each other by a delay time, and transmit output switch circuit to select either the transmit timing input signal or a corresponding one of the intermediate transmit timing signals as a corresponding output transmit timing signal. Such methods and systems also comprise a second delay circuit for receiving the receive timing input signal and generating a number of intermediate receive timing signals delayed with respect to each other by the delay time, a shift-delay circuit coupled to the second delay circuit and the receive timing input signal to add the delay time to the intermediate receive timing signals, and a receive output switch circuit to select either the receive timing input signal or a corresponding one of the intermediate receive timing signals as a corresponding output receive timing signal. Such methods and systems also comprise an antenna array comprising a plurality of transmit antennas, a plurality of receive antennas, and means for selectively enabling the transmit and receive antennas to allow each of the receive antennas to receive energy from any one of the transmit antennas.
20 Citations
40 Claims
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1. An apparatus for identifying a buried object using array-based ground penetrating radar having a control device, a plurality of transmit antennas, and a plurality of receive antennas, said control device receiving a transmit timing input signal and a receive timing input signal, said apparatus comprising:
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a first delay circuit receiving the transmit timing input signal and generating a number of intermediate transmit timing signals delayed with respect to each other by a delay time;
transmit output switch circuit to select either the transmit timing input signal or a corresponding one of the intermediate transmit timing signals as a corresponding output transmit timing signal;
a second delay circuit receiving the receive timing input signal and generating a number of intermediate receive timing signals delayed with respect to each other by the delay time;
a shift-delay circuit coupled to the second delay circuit and the receive timing input signal to add the delay time to the intermediate receive timing signals; and
receive output switch circuit to select either the receive timing input signal or a corresponding one of the intermediate receive timing signals as a corresponding output receive timing signal. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A method for identifying a buried object using array-based ground penetrating radar having a control device, a plurality of transmit antennas, and a plurality of receive antennas, said control device receiving a transmit timing input signal and a receive timing input signal, the method comprising:
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generating a plurality of intermediate transmit timing signals by delaying the transmit timing input signal by a plurality of delay times;
selecting either the transmit timing input signal or a corresponding one of the intermediate transmit timing signals as a corresponding output transmit timing signal;
generating a number of intermediate receive timing signals by delaying the receive timing input signal by the plurality of delay times; and
selecting either the receive timing input signal or a corresponding one of the intermediate receive timing signals as a corresponding output receive timing signal. - View Dependent Claims (11, 12, 13, 14, 15)
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16. An apparatus for identifying a buried object using array-based ground penetrating radar having an antenna array, said antenna array comprising:
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a plurality of transmit antennas linearly arranged;
a plurality of receive antennas linearly arranged and parallel to the transmit antennas; and
means for selectively enabling the transmit and receive antennas to allow each of the receive antennas to receive energy from any one of the transmit antennas. - View Dependent Claims (17, 18, 19, 20, 21)
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22. A control device for an impulse radar having a plurality of transmit antennas and a plurality of receive antennas, said control device receiving a transmit timing input signal and a receive timing input signal, comprising:
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a first delay circuit receiving the transmit timing input signal and generating a number of intermediate transmit timing signals delayed with respect to each other by a delay time;
transmit output switch circuit to select either the transmit timing input signal or a corresponding one of the intermediate transmit timing signals as a corresponding output transmit timing signal;
a second delay circuit receiving the receive timing input signal and generating a number of intermediate receive timing signals delayed with respect to each other by the delay time;
a shift-delay circuit coupled to the second delay circuit and the receive timing input signal to add the delay time to the intermediate receive timing signals; and
receive output switch circuit to select either the receive timing input signal or a corresponding one of the intermediate receive timing signals as a corresponding output receive timing signal. - View Dependent Claims (23, 24, 25, 26, 27, 28, 29, 30)
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31. An apparatus for identifying a buried object using array-based ground penetrating radar having a control device, a plurality of transmit antennas, and a plurality of receive antennas, said control device receiving a transmit timing input signal and a receive timing input signal, the apparatus comprising:
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means for generating a plurality of intermediate transmit timing signals by delaying the transmit timing input signal by a plurality of delay times;
means for selecting either the transmit timing input signal or a corresponding one of the intermediate transmit timing signals as a corresponding output transmit timing signal;
means for generating a number of intermediate receive timing signals by delaying the receive timing input signal by the plurality of delay times; and
means for selecting either the receive timing input signal or a corresponding one of the intermediate receive timing signals as a corresponding output receive timing signal. - View Dependent Claims (32, 33, 34, 35, 36, 37, 38, 39, 40)
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Specification