Method and apparatus for controlling radar transmission based on comparing received radio waves
AssigneeSocionext Inc.
InventorJoji Hayashi
Life of this patent
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Abstract
A method for controlling a radar apparatus that detects an object using frequency modulation includes: performing first reception of a radio wave in a state where transmission of a radio wave for detecting the object is stopped, to obtain a first reception signal; performing second reception of a radio wave in a state where the transmission of the radio wave is stopped, to obtain a second reception signal, after the performing of the first reception; acquiring a strength of a difference signal between the first reception signal and the second reception signal; comparing the strength with a threshold value; and starting the transmission of the radio wave in a case where the strength is equal to or less than the first threshold value in the comparison.
Claims21
A method for controlling a radar apparatus that detects an object using frequency modulation, the method comprising:
- performing first reception of a radio wave in a state where transmission of a radio wave for detecting the object is stopped, to obtain a first reception signal;
- performing second reception of a radio wave in a state where the transmission of the radio wave is stopped, to obtain a second reception signal, immediately after the performing of the first reception;
- acquiring a strength of a difference signal between the first reception signal and the second reception signal;
- comparing the strength with a first threshold value;
- and
- starting the transmission of the radio wave based on a result of the comparison of the strength and the first threshold value.
A radar apparatus that detects an object using frequency modulation, the radar apparatus comprising:
- a first receiver that receives a radio wave in a state where transmission of a radio wave for detecting the object is stopped, to obtain a first reception signal;
- a second receiver that receives a radio wave in the state where the transmission of the radio wave is stopped, to obtain a second reception signal, immediately after the first receiver obtains the first reception signal;
- a signal strength acquirer that acquires a strength of a difference signal between the first reception signal and the second reception signal;
- a comparator that compares the strength with a threshold value;
- and
- a radar controller configured to control to start the transmission of the radio wave when the strength is equal to or less than the threshold value in the comparison.
Dependencies are inferred from the claim text.