Range and direction of arrival migration with doppler ambiguity estimation
AssigneeGM Global Technology Operations LLC
InventorsOren Longman, Shahar Villeval, Igal Bilik
Life of this patent
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Abstract
A vehicle, radar system for a vehicle, and method of determining a radial velocity of an object via the radar system. The radar system includes a transmitter, receiver and processor. The transmitter transmits a source signal towards an object, and the receiver for receives a reflection of the source signal from the object. The processor obtains a Doppler measurement related to a radial velocity of the object, wherein the Doppler measurement includes a Doppler ambiguity, obtains a range walk rate for the radial velocity of the object, and resolves the Doppler ambiguity of the Doppler measurement using the range walk rate to obtain the radial velocity of the object.
Claims20
A method of determining a radial velocity of an object via a radar system, comprising:
- obtaining a Doppler measurement related to a radial velocity of the object, wherein the Doppler measurement includes a Doppler ambiguity;
- obtaining a range walk rate for the radial velocity of the object;
- resolving the Doppler ambiguity of the Doppler measurement using the range walk rate to obtain the radial velocity of the object.
A radar system for a vehicle, comprising:
- a transmitter for transmitting a source signal towards an object;
- a receiver for receiving a reflection of the source signal from the object;
- and
- a processor configured to:
- obtain a Doppler measurement related to a radial velocity of the object from the reflection, wherein the Doppler measurement includes a Doppler ambiguity;
- obtain a range walk rate for the radial velocity of the object;
- and
- resolve the Doppler ambiguity of the Doppler measurement using the range walk rate to reduce an ambiguity of the radial velocity of the object.
A vehicle, comprising:
- a transmitter for transmitting a source signal towards an object;
- a receiver for receiving a reflection of the source signal from the object;
- and
- a processor configured to:
- obtain a Doppler measurement related to a radial velocity of the object from the reflection, wherein the Doppler measurement includes a Doppler ambiguity;
- obtain a range walk rate for the radial velocity of the object;
- and
- resolve the Doppler ambiguity of the Doppler measurement using the range walk rate to reduce an ambiguity of the radial velocity of the object.
Dependencies are inferred from the claim text.