Car radar testing
First Claim
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1. A method for testing the function of a car radar of FMCW type, comprising:
- simulating, in an actual beam path located in a transceiver antenna unit of the car radar, a target located at a distance from the unit;
controlling an influence on the radar radiation of said actual beam path therein; and
evaluating, in the car radar,the simulated target data.
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Abstract
A method and device for testing the function of a radar. A diode (21) with variable radar radiation impedance is arranged in the beam path (23) inside the antenna unit (4, 6) of the car radar and is fed with alternating current for simulating a radar target at a distance from the antenna unit. The obtained target data for the simulated target are compared to the expected target data for testing the function.
22 Citations
20 Claims
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1. A method for testing the function of a car radar of FMCW type, comprising:
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simulating, in an actual beam path located in a transceiver antenna unit of the car radar, a target located at a distance from the unit;
controlling an influence on the radar radiation of said actual beam path therein; and
evaluating, in the car radar,the simulated target data. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A method for testing the function of a car radar of FMCW type, comprising:
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providing in a controlled manner in an actual beam path located in a transceiver antenna unit of the car radar, a radar radiation influence, wherein a reflected radar signal is obtained which represents a simulated target located at a distance from the unit and which corresponds to said controlled radar radiation influence;
evaluating the thus-obtained simulated target signal; and
relating the obtained simulated target data to expected target data corresponding to the controlled radar radiation influence. - View Dependent Claims (9, 10, 11)
arranging, in said actual beam path, a controllable radar radiation impedance;
wherein controlling said radar radiation influence includes controlling said controllable radar radiation impedance to provide a radar radiation reflection corresponding to the simulated target.
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10. A method according to claim 9, further comprising:
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varying said controllable radar radiation impedance with a frequency corresponding to a target signal frequency of the simulated target; and
evaluating a phase and an amplitude of the simulated target signal frequency.
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11. A method according to claim 10, wherein the transceiver antenna unit has a movable reflector element for controlling the outgoing radar radiation in different directions, wherein the method further comprises:
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arranging the controllable radar radiation impedance to have an electric distance from a radiation receiving location of the unit vary with a motion of the reflector element; and
evaluating the phase and the amplitude of the received simulated target signal to test the motion of the reflector element.
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12. A device for testing the function of a car radar of FMCW type, which comprises:
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a transceiver antenna unit, means for feeding the unit with signals so that it transmits radar radiation, means for processing signals from the unit originating from reflected radar radiation received by the unit with a view to preparing radar target data, reflection means arranged in said unit in an actual radar beam path and having controllable radar radiation reflecting properties, means for controlling said reflection means to reflect radar radiation corresponding to a simulated target located at a distance from the unit, and means for evaluating radar target data corresponding to the simulated target. - View Dependent Claims (13, 14, 15, 16)
wherein the reflection means is arranged between die fixed reflector element and the movable reflector element at one of die end of the fixed reflector element.
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17. A method for testing a function of a car radar of FMCW type, comprising:
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providing a simulated target; and
integrating the simulated target in an actual beam path located in a transceiver antenna unit of the car radar. - View Dependent Claims (18, 19, 20)
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Specification