System and method for suppressing close clutter in a radar system
First Claim
1. A method for processing radio frequency signals, comprising:
- transmitting a first transmitted calibration radio frequency (RF) signal into a background environment in which no targets are present;
receiving a first received calibration (RF) signal associated with the first transmitted calibration RF signal, the first received calibration RF signal reflected from the background environment and indicative of the environment in which no targets are present;
generating a first threshold signal based at least in part on the first received calibration RF signal;
transmitting a second transmitted operation RF signal;
receiving a second received operation RF signal associated with the second transmitted RF signal; and
generating a display based on, at least in part, the first threshold signal and the second received operation RF signal.
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Accused Products
Abstract
A system for processing electromagnetic waves in a radar system is disclosed. The system includes a transmitter operable to transmit operating waves and calibration waves, one or more receivers operable to receive reflected calibration waves and operating waves, and a system controller operable to process the received calibration waves and operating waves. The system controller may process the received waves by generating a threshold signal based on the calibration waves, and comparing the threshold signal to the operating waves. The system controller may also process operating waves and calibration waves in accordance with one or more signal conditioning algorithms. Additionally, the system controller may display an image representing a target on a display by comparing received operating waves with the generated threshold signal.
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Citations
25 Claims
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1. A method for processing radio frequency signals, comprising:
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transmitting a first transmitted calibration radio frequency (RF) signal into a background environment in which no targets are present; receiving a first received calibration (RF) signal associated with the first transmitted calibration RF signal, the first received calibration RF signal reflected from the background environment and indicative of the environment in which no targets are present; generating a first threshold signal based at least in part on the first received calibration RF signal; transmitting a second transmitted operation RF signal; receiving a second received operation RF signal associated with the second transmitted RF signal; and generating a display based on, at least in part, the first threshold signal and the second received operation RF signal. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A radio frequency signal processing system comprising:
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a transmitter operable to; transmit a first transmitted calibration radio frequency (RF) signal into a background environment in which no targets are present; and transmit a second transmitted operation RF signal; a first receiver operable to; receive a first received calibration RF signal associated with the first transmitted calibration RF signal, the first received calibration RF signal reflected from the background environment and indicative of the background environment in which no targets are present; and receive a second received operation RF signal associated with the second transmitted RF signal; and a processor operable to; generate a first threshold signal based, at least in part, on the first received calibration RF signal; and generate a display based on, at least in part, the second received operation RF signal and the first threshold signal. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16)
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17. Logic for processing radio frequency signals, the logic encoded on tangible media and operable, when executed on a processor to:
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transmit a first received calibration radio frequency (RF) signal into a background environment in which no targets are present; receive a first received calibration RF signal associated with the first transmitted calibration RF signal, the first received calibration RF signal reflected from the background environment and indicative of the environment in which no targets are present; generate a first threshold signal based at least in part on the first received calibration RF signal; transmit a second transmitted operation RF signal; receive a second received operation RF signal associated with the second transmitted RF signal; and generate a display based on, at least in part, the second received RF signal and the first threshold signal. - View Dependent Claims (18, 19, 20, 21, 22, 23, 24)
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25. A system for processing radio-frequency signals, comprising:
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means for transmitting a first transmitted calibration RF signal into a background environment in which no targets are present; means for receiving a first received calibration RF signal associated with the first transmitted calibration RF signal, the first received calibration RF signal reflected from the background environment and indicative of the environment in which no targets are present; means for generating a first threshold signal based at least in part on the first received calibration RF signal; means for transmitting a second transmitted operation RF signal; means for receiving a second received operation RF signal associated with the second transmitted RF signal; and means for generating a display based on, at least in part, the second received operation RF signal and the first threshold signal.
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Specification