Uwb sensing system and method for static object location in vehicle parking applications
AssigneeSTMicroelectronics International N.V.
InventorsGhiath AL-KADI, Filippo CASAMASSIMA, Bernhard HINTEREGGER
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Abstract
An Ultra-Wideband sensing system comprises a first and a second UWB anchors that reciprocally transmit an UWB frame to each other. The system obtains a channel impulse response from each UWB frame signal received by the other UWB anchor, and compares the obtained CIR to a reference CIR to identify a path indicative of a static object's presence. The system localizes the static object using an Angle of Arrival of each signal. By leveraging UWB anchors for dual purposes such as communication devices and radar sensors, the system enables the reuse of vehicle access infrastructure for enhanced parking sensing, potentially reducing costs.
Claims14
An Ultra-Wideband (UWB) sensing system, comprising:
- a first UWB anchor configured to generate an UWB frame signal;
- and
- a second UWB anchor configured to receive the UWB frame signal from the first UWB anchor;
- a processing circuit configured to:
- obtain a first channel impulse response from the UWB frame signal, compare the first channel impulse response to a first reference channel impulse response in order to determine at least one second path corresponding to a static object indicated in the received channel impulse response, and locate the static object relative to the UWB sensing system using an Angle of Arrival of the UWB frame signal along the determined at least one second path.
A sensing method, comprising:
- receiving, by a second Ultra-Wideband (UWB) anchor, an UWB frame signal from a first UWB anchor;
- obtaining a first channel impulse response from the received UWB frame signal;
- comparing the first channel impulse response to a reference channel impulse response to determine at least one second path corresponding to a static object indicated in the first channel impulse response;
- and
- locating the static object relatively to the UWB anchors using an Angle of Arrival of the UWB frame signal along the determined at least one second path.
Dependencies are inferred from the claim text.