Object detection device and object detection method for detecting objects using radar waves
A detection device and detection method technology, applied in the direction of measurement device, use of re-radiation, radio wave measurement system, etc., can solve the problem of inability to detect the incoming wave of the target object, so as to prevent the decrease of detection accuracy and suppress the decrease of signal level , the effect of improving the detection accuracy
Active Publication Date: 2018-11-06
DENSO CORP
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Therefore, the arrival wave from the object within the distance range that should be detected is buried in the arrival wave component from the object within the extremely close distance range, and in the object detection device, it cannot be detected Issues such as arrival waves of objects within the range of distances to be detected
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[0112]As mentioned above, although embodiment of this indication was described, this indication is not limited to the said embodiment, It can implement in various forms in the range which does not deviate from the summary of this indication.
[0113] For example, in the object detection processing of the above-mentioned embodiment, the first detection processing and the second detection processing are executed in parallel, but the first detection processing and the second detection processing may not be executed in parallel.
[0114] Also, in the present disclosure, the second detection process may also be omitted. In this case, S290 in the object mark detection process can also be omitted. In addition, in S300 of the object detection process in this case, the result of the history linking process in S260 is output, and the object mark information of each object mark connected to the history has been recorded consecutively for a predetermined number of times.
[0115] In addi...
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The invention provides an object detection device and an object detection method for detecting an object by using radar waves. The radar device includes: a transmitting unit that transmits radar waves composed of continuous waves at a predetermined cycle; a receiving unit that generates a beat signal (BT) by mixing received incoming waves with radar waves; and a signal processing unit that Object detection processing for detecting an object that reflects radar waves is executed. In the object detection process, the signal value is extracted from the difference frequency signal generated by the receiving unit according to the reciprocal of the frequency of each DC component, that is, a predetermined time, and an approximate curve of a plurality of signal values is calculated as a DC component signal, and the signal value is generated from An object signal obtained by subtracting the calculated DC component signal from the difference frequency signal (S210). Based on the results of frequency analysis of the target signal (S220 to S260), an object object that is a source of an incoming wave is detected (S290, S300).
Description
technical field [0001] The present disclosure relates to an object detection device that detects an object based on a result of receiving and transmitting radar waves. Background technique [0002] Conventionally, there is known a target detection device including: a transmitting unit that transmits radar waves composed of continuous waves at a predetermined cycle; and a receiving unit that receives incoming waves and mixes radar waves with the received incoming waves to generate a beat frequency signal; and a signal processing unit that detects an object that is a source of an incoming wave based on a result of frequency analysis performed on the beat frequency signal. [0003] For example, Japanese Patent No. 3788322 proposes an object detection device that uses a frequency-analyzed beat signal as a result of subtracting a specific value from a beat signal generated by a receiving unit. The specific value in the object detection device described in this patent document is...
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IPC IPC(8): G01S7/35G01S13/34
CPCG01S7/35G01S7/354G01S13/34G01S13/931G01S7/356G01S13/584
Inventor 中林健人三宅康之寒川佳江水谷玲义伊东洋介田村圭
Owner DENSO CORP