OBJECT DETECTION DEVICE, VELOCITY DETECTION DEVICE, AND VEHICLE

摘要

An object detection device to be mounted on a mobile body includes: a transmit antenna; a receive antenna; first circuitry that causes the transmit antenna to alternately switch between first and the second beams and transmits radio signals, and that receives, by using the receive antenna, reflected wave signals; and second circuitry that detects a ground velocity of the mobile body corresponding to an azimuth, on the basis of a radio signal transmitted by using the first beam and a reflected wave signal obtained as a result of radio waves of the radio signal being reflected on a road surface, and that detects a relative velocity of the object regarding the mobile body, on the basis of a radio signal transmitted by using the second beam and a reflected wave signal obtained as a result of radio waves of the radio signal being reflected on an object.

主权项

1. An object detection device to be mounted on a mobile body which moves on a road surface so as to detect an object around the mobile body, comprising:
a transmit antenna that selectively switches between a first beam having a first angle of depression and being directed to the road surface and a second beam having a second angle of depression and being directed to the object, the second angle of depression being smaller than the first angle of depression; a receive antenna; first circuitry that causes the transmit antenna to alternately switch between the first and the second beams and transmits radio signals by using the first beam and the second beam, and that receives, by using the receive antenna, reflected wave signals returned in response to the transmitted radio signals; and second circuitry that detects at least one ground velocity of the mobile body corresponding to at least one azimuth, on the basis of a radio signal transmitted by using the first beam and a reflected wave signal obtained as a result of radio waves of the radio signal transmitted by using the first beam being reflected on the road surface, and that detects a relative velocity of the object regarding the mobile body, on the basis of a radio signal transmitted by using the second beam and a reflected wave signal obtained as a result of radio waves of the radio signal transmitted by using the second beam being reflected on the object.