Radar apparatus and failure detection method thereof
AssigneesFujitsu Ten Limited, Fujitsu Limited
InventorsMasao Nakano, Kenji Oka
Life of this patent
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Abstract
The present invention provides a radar apparatus, which can diagnose failure at low cost with high accuracy, and a failure diagnosis method thereof. An antenna serves as both a transmit antenna and a receive antenna. A transmit and receive select switch switches the transmission and reception of the antenna. A control unit measures a power value based on an output signal of a receive wave received by the antennas, and judges that the transmit and receive select switch fails when this power value exceeds a threshold.
Claims5
A radar apparatus having a transmit and receive antenna which serves as both a transmit antenna for transmitting a transmit wave into space and a receive antenna for receiving a reflected wave of said transmit wave reflected on a target, comprising:
- a transmit and receive switching unit which switches transmission and reception of said transmit and receive antenna, and
- a failure detection unit which judges that said transmit and receive switching unit fails when a power value of a receive signal received by said transmit and receive antenna is greater than a threshold.
A failure detection method in a radar apparatus having a transmit and receive antenna which serves as both a transmit antenna for transmitting a transmit wave into space and a receive antenna for receiving a reflected wave of said transmit wave reflected on a target, the method comprising the step of:
- judging that a transmit and receive switching unit which switches transmission and reception of said transmit and receive antenna fails when a power value of a receive signal received by said transmit and receive antenna is greater than a threshold.
Dependencies are inferred from the claim text.