Radar channel estimation
AssigneeKabushiki Kaisha Toshiba
InventorAlfred Daniel WIFFEN
Life of this patent
Estimating the term…
Abstract
A radar return channel is estimated at a radar receiver by processing an existing channel estimate along with a radar return signal for an ideal transmission, to produce an updated estimate. Updating can be carried out based on a determination that the existing estimate has become degraded. Embodiments include using a least squares deconvolution to update polynomials describing a transfer function of the channel estimate.
Claims20
A method of processing a received radar signal received at a radar receiver, the received radar signal being consequent from a radar signal emitted at a radar transmitter, the method comprising:
- processing the received radar signal using a radar return channel estimate for a radar return channel defined between the radar transmitter and the radar receiver;
- determining an updated estimate of the radar return channel using the radar return channel estimate and a received radar signal resultant from an emission of an ideal transmit waveform;
- and
- updating the radar return channel estimate with the updated estimate.
A radar receiver for processing a received radar signal, the received radar signal being consequent from a radar signal emitted at a radar transmitter, the receiver comprising:
- a signal processor operable to process the received radar signal using a radar return channel estimate for a radar return channel defined between the radar transmitter and the radar receiver;
- and
- a channel estimator operable to determine an updated estimate of the radar return channel using the radar return channel estimate and a received radar signal resultant from an emission of an ideal transmit waveform and to update the radar return channel estimate with the updated estimate.
A radar system comprising a radar transmitter for emitting a radar signal and a radar receiver for processing a received radar signal, the received radar signal being consequent from the radar signal emitted at the radar transmitter, wherein the radar receiver comprises:
- a signal processor operable to process the received radar signal using a radar return channel estimate for a radar return channel defined between the radar transmitter and the radar receiver;
- and
- a channel estimator operable to determine an updated estimate of the radar return channel using the radar return channel estimate and a received radar signal resultant from an emission of an ideal transmit waveform and to update the radar return channel estimate with the updated estimate.
Dependencies are inferred from the claim text.