Method and device for aligning radar mount direction, and radar aligned by the method or device
First Claim
1. A radar mount direction alignment device to be used for aligning a transmit/receive direction of a radar device mounted on a member on which the radar device is to be mounted, the device comprising:
- a receiving section for receiving a signal emitted from the radar device;
a transmission section for transmitting a signal to the radar device; and
first means for transmitting, toward the radar device, a signal which, when the signal emitted from the radar device is received, behaves as if having been reflected from a reflection target disposed at a position farther from the radar device than a distance between the radar device and the radar mount direction alignment device.
1 Assignment
0 Petitions
Accused Products
Abstract
A radar mount direction alignment device to be used for aligning the transmit/receive direction of a radar device 2D mounted on a member on which a radar device is to be mounted, such as a vehicle 1. The radar mount direction alignment device has receiving sections b9, b10 for receiving a signal emitted from the radar device 2D, and transmission sections a9, a10 for transmitting a signal to the radar device 2D. The radar mount direction alignment device has the function of emitting, toward the radar device 2D, a signal which, upon receipt of a signal output from the radar device 2D, behaves as if having been received at and reflected from a position farther from the radar device 2D than a distance between the radar device 2D and the radar mount direction alignment device.
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Citations
48 Claims
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1. A radar mount direction alignment device to be used for aligning a transmit/receive direction of a radar device mounted on a member on which the radar device is to be mounted, the device comprising:
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a receiving section for receiving a signal emitted from the radar device;
a transmission section for transmitting a signal to the radar device; and
first means for transmitting, toward the radar device, a signal which, when the signal emitted from the radar device is received, behaves as if having been reflected from a reflection target disposed at a position farther from the radar device than a distance between the radar device and the radar mount direction alignment device. - View Dependent Claims (3, 4, 5, 6, 7, 8, 9, 10, 11, 13, 15, 17, 18, 19)
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2. A radar mount direction alignment device, further comprising:
second means for providing a predetermined delay time for the signal received by the receiving section.
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12. A radar mount direction alignment method for aligning a transmit/receive direction of a radar device, the device being mounted on a member on which a radar unit is to be mounted, the device having a relative angle sensor for sensing a relative angle with reference to a target, the method comprising:
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disposing a transmission section at a predetermined position;
detecting an angle relative to the transmission section by the relative angle sensor;
detecting an angle relative to the receiving section detected by the relative angle sensor; and
aligning the transmit/receive direction of the radar device in accordance with the angle relative to the transmission section the angle relative to the receiving section.
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14. A radar mount direction alignment method of aligning a transmit/receive direction of a radar device, the device being mounted on a member on which a radar unit is to be mounted, the device having a signal intensity sensor for receiving a signal reflected from a target and detecting the intensity of the receiving signal, the method comprising:
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placing a transmission section at a predetermined position;
detecting the intensity of the signal by the signal intensity sensor; and
aligning a transmit/receive direction of the radar device in accordance with the intensity of a signal transmitted from the transmission section.
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16. A radar mount direction alignment method of aligning a transmit/receive direction of a radar device, the device being mounted on a member on which a radar unit is to be mounted, the device having a signal intensity sensor for detecting the intensity of a signal received from the outside, the method further comprising:
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placing a plurality of transmission sections each for transmitting branched signals at different predetermined positions;
detecting the intensity of the signal by the signal intensity sensor; and
aligning a transmit/receive direction of the radar device in accordance with the intensity of signals transmitted from the transmission sections.
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20. A radar mount direction alignment method for aligning a transmit/receive direction of a radar device, the device being mounted on a member on which a radar unit is to be mounted, the device having a relative angle sensor for detecting a distance relative to a target, the method comprising:
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disposing a reflection target at a predetermined location;
detecting an angle relative to the reflection target by the relative angle sensor; and
aligning the transmit/receive direction of the radar device in accordance with the angle relative to the reflection target. - View Dependent Claims (21, 22, 23, 24, 25, 26, 27, 28, 30)
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29. A radar device having a reflection sensitivity sensor for detecting the intensity of a signal reflected from a target and a relative distance sensor for detecting a distance relative to the target, the radar device comprising:
a detection sensitivity difference calculation device for calculating a difference in the sensitivity in detection of the intensity of a reflected signal which is susceptible to the influence of a distance, on the basis of a distance relative to the target detected by the relative distance sensor.
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31. A radar mount direction alignment method for aligning a transmit/receive direction of a radar device which is mounted on a member on which a radar device is to be mounted, such as a vehicle, and has a beam scanning function, the method comprising:
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disposing a receiving section for receiving a signal emitted from the radar device at a predetermined position; and
detecting a change in the level of a signal received by the receiving section as a result of beam scanning; and
aligning the transmit/receive direction of the radar device in accordance with the change in the level of the signal. - View Dependent Claims (32, 33, 34, 35, 36, 37, 38, 39)
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40. A radar mount direction alignment device comprising:
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a receiving section for receiving a signal; and
a converter for converting the frequency of the signal into a lower frequency.
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41. A radar mount direction alignment device comprising:
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a receiving section for receiving a signal; and
a measurement instrument for measuring a receiving level from the signal through use of an FFT system.
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42. A radar mount direction alignment adjusting device for a radar being mounted on a vehicle and emitting a signal, the radar mount direction alignment adjusting device comprising:
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a first reflection unit including;
a first antenna for receiving the signal from the radar and transmitting the signal toward the radar;
a first transmission line for transmitting the signal received by the first antenna;
a first attenuator for attenuating the signal from the first transmission line by a first predetermined ratio; and
a first reflector for reflecting the signal from the first attenuator; and
a second reflection unit including;
a second antenna for receiving the signal from the radar and transmitting the signal toward the radar;
a second transmission line for transmitting the signal received by the second antenna;
a second attenuator for attenuating the signal from the second transmission line by a second predetermined ratio; and
a second reflector for reflecting the signal from the second attenuator, wherein the length of the first transmission line is different from the that of the second transmission line. - View Dependent Claims (43, 44, 45, 46, 47)
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48. A method for adjusting alignment of a mount direction of a radar, the method comprising:
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receiving a signal from the radar by a first reflector;
transmitting a first signal from the first reflector to the radar, the signal corresponding to a first distance;
receiving the signal from the radar by a second reflector;
transmitting a second signal from the second reflector to the radar, the second signal corresponding to a second distance; and
adjusting the alignment of the radar in accordance with the first signal and the second signal.
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Specification