Radar device
First Claim
1. A radar device installed at a position having a prescribed height from the ground, comprising:
- a radar transmitter that converts a transmission code into a radio-frequency radar transmission signal and transmits the radar transmission signal from a transmission antenna which is inclined so as to extend in a prescribed direction which is defined by a line connecting the position having the prescribed height and the ground; and
a radar receiver that estimates a signal incoming direction from a target using incoming direction vectors, having fixed azimuth components and variable elevation angle components, of the target calculated on the basis of outputs of plural antenna system processors which receive a reflection wave signal produced by reflection of the radar transmission signal by the target.
3 Assignments
0 Petitions
Accused Products
Abstract
Each antenna system processor performs coherent integration on a prescribed number of correlation values between a reception signal and a transmission code. A correlation matrix generator generates a correlation matrix on the basis of coherent integration values. A distance estimator estimates a distance to a target. A direction vector storage is stored with direction vectors each of which includes an azimuth component with respect to a target and an elevation angle component of a line connecting a transmission antenna and the target in which a prescribed direction is used as a reference. An incoming direction estimator estimates a signal incoming direction from the target using the correlation matrix and the direction vectors in which the elevation angle component range is restricted on the basis of the distance to the target.
15 Citations
15 Claims
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1. A radar device installed at a position having a prescribed height from the ground, comprising:
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a radar transmitter that converts a transmission code into a radio-frequency radar transmission signal and transmits the radar transmission signal from a transmission antenna which is inclined so as to extend in a prescribed direction which is defined by a line connecting the position having the prescribed height and the ground; and a radar receiver that estimates a signal incoming direction from a target using incoming direction vectors, having fixed azimuth components and variable elevation angle components, of the target calculated on the basis of outputs of plural antenna system processors which receive a reflection wave signal produced by reflection of the radar transmission signal by the target. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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Specification