Radar device
First Claim
1. A radar device of a digital beam forming system that radiates waves toward a space, receives a reflected wave that is reflected by an object which exists within the space, and subjects the received reflected wave to signal processing to thereby measure the object, the radar device comprising:
- a transmitting antenna configured to radiate waves toward an observation range where required maximum distances different in respective azimuths are assumed, has a directivity characteristic in which the transmitting gains in the respective azimuths are set on the basis of the distance attenuation characteristic at the required maximum distances,wherein the transmitting antenna has a directivity characteristic that is set on the basis of the distance attenuation characteristic and a signal processing gain that is determined according to a time resolution of the signal processing at the required maximum distances.
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Accused Products
Abstract
To provide a radar device that is capable of performing both of long-distance detection performance and short-distance wide-angle monitor in a DBF system radar, there is provided a radar device of a digital beam forming system that radiates waves toward a space, receives a reflected wave that is reflected by an object which exists within the space, and subjects the received reflected wave to signal processing to thereby measure the object, the radar device including a transmitting antenna that radiates waves toward an observation range where required maximum distances different in respective azimuths are assumed, and has a directivity characteristic in which the transmitting gains in the respective azimuths are set on the basis of the distance attenuation characteristic at the required maximum distances.
20 Citations
11 Claims
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1. A radar device of a digital beam forming system that radiates waves toward a space, receives a reflected wave that is reflected by an object which exists within the space, and subjects the received reflected wave to signal processing to thereby measure the object, the radar device comprising:
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a transmitting antenna configured to radiate waves toward an observation range where required maximum distances different in respective azimuths are assumed, has a directivity characteristic in which the transmitting gains in the respective azimuths are set on the basis of the distance attenuation characteristic at the required maximum distances, wherein the transmitting antenna has a directivity characteristic that is set on the basis of the distance attenuation characteristic and a signal processing gain that is determined according to a time resolution of the signal processing at the required maximum distances. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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Specification