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AssigneeDelphi Technologies, Inc.
InventorsGregory George Lajiness, Stephen William Alland, James Fredrick Searcy
Estimating the term…
An apparatus and method for detecting radar system blockage includes a radar system (10) having an antenna unit (14) configured to transmit radar signals and receive reflected radar signals. In one embodiment, fixed frequency continuous wave radar signals are transmitted, and corresponding reflected signals are sampled and processed to determine a mainbeam clutter signal peak in frequency bins near those corresponding to vehicle speed. If this peak is less than a power threshold, the antenna unit (14) is at least partially blocked. In another embodiment, a number of most recent reflected tracking signal amplitudes are sampled, normalized to a predefined range value and filtered to produce a smoothed tracking amplitude. If the smoothed tracking amplitude drops below an amplitude threshold, the antenna unit (14) is at least partially blocked. The two embodiments may be combined to determine a radar antenna blockage status as a function of both techniques.
System for detecting radar blockage, comprising:
System for detecting radar blockage, comprising:
A method for detecting radar blockage, comprising the steps of:
A method for detecting radar blockage, comprising the steps of:
Dependencies are inferred from the claim text.