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Vehicle-mounted radar device, object detection method and object detection procedure

A vehicle-mounted radar device and object technology, applied in the field of vehicle-mounted radar devices

Inactive Publication Date: 2013-06-05
HONDA ELESYS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0021] However, in such a method, there is a problem of the possibility of misjudgment

Method used

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  • Vehicle-mounted radar device, object detection method and object detection procedure
  • Vehicle-mounted radar device, object detection method and object detection procedure
  • Vehicle-mounted radar device, object detection method and object detection procedure

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no. 1 Embodiment approach

[0057] Next, a first embodiment of the present invention will be described. figure 1 It is a block diagram showing the configuration of an on-vehicle radar device 100 according to an embodiment of the present invention.

[0058] In this embodiment, an electronic scanning type radar device (millimeter-wave radar device of the FMCW system) is shown as an example of a vehicle-mounted radar device.

[0059] The vehicle-mounted radar device 100 of this embodiment is installed in the front part of a vehicle (in this embodiment, an automobile as an example) so as to send radio waves (transmission waves) in front of the vehicle and detect (detect) Information about the object (target) in front of you.

[0060] The radar device 100 of this embodiment includes: n (n is a plurality of) receiving antennas (receiving elements) 1-1 to 1-n; n mixers 2-1 to 2-n; n filters 3-1 ~3-n; switch (SW) 4; A / D converter (ADC) 5; control unit 6; triangular wave generation unit 7; voltage controlled o...

no. 2 Embodiment approach

[0228] Next, a second embodiment of the present invention will be described. In the instructions below, figure 2 , Figure 5 , Figure 6 , Figure 7 , Figure 8 , Figure 9 It is common to the first embodiment.

[0229] Figure 11 It is a block diagram showing the configuration of the vehicle-mounted radar device 200 according to the second embodiment of the present invention. The radar device 200 differs from the radar device 100 of the first embodiment in that it includes a direction detection unit 131 instead of the direction detection unit 31 in the radar device 100 of the first embodiment, and includes a signal processing unit 120 having the direction detection unit 131 . . Other constituent elements are the same as those of the radar device 100 . The same reference numerals are used for the same constituent elements as those of the radar device 100 .

[0230] In this embodiment, an electronic scanning type radar device (millimeter-wave radar device of the FMCW...

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Abstract

The invention provides a vehicle-mounted radar device, an object detection method and an object detection procedure. The vehicle-mounted radar device comprises: a plurality of receiving antennas and a direction detection part. The receiving antennas are used as reception array antennas for received wave from object reflection. The receiving antennas constitute more than two kinds of reception array antennas with an average interval in a non-integer multiple relationship. The direction detection part conducts direction detection process according to the signals of the reception array antennas. Under the circumstance that the received signals of the reception array antennas are identical with the direction of the object, the direction of the detected object is judged to be an actual direction, otherwise, the direction of the detected object is judged to be a fake direction.

Description

technical field [0001] The present invention relates to a vehicle-mounted radar device, an object detection method and an object detection program. Background technique [0002] In recent years, in order to improve the convenience and safety of vehicles such as automobiles, in-vehicle radar devices using millimeter-wave radars as sensing devices have become popular. [0003] In particular, as a longitudinal detection method, an FMCW (Frequency Modulated Continuous Wave) method capable of simultaneously obtaining a distance and a relative velocity to an object (object) is generally used. In addition, as a horizontal detection method, methods such as object orientation detection by digital beam forming (DBF: Digital Beam Forming) and object separation by MUSIC (MUltiple SIgnal Classification) are generally known. [0004] Here, the vehicle-mounted radar device is installed, for example, in front of a vehicle to transmit radio waves (transmission waves) in front of the vehicle...

Claims

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Application Information

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IPC IPC(8): G01S13/02G01S7/02
Inventor 和泉到
Owner HONDA ELESYS CO LTD
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