Patent · US Active

Systems and methods to detect motion on sloped surfaces

US11714181B2 · kind B2 · utility

0Cited by
20References
18Claims
0Family size

Inventors

Key dates

Filing dateJul 27, 2022
Grant dateAug 1, 2023
Priority date—
Expiry dateJul 27, 2042

Classification

  • Technology area (CPC G)Physics
  • CPC primaryG01S2013/0245
  • WIPO fieldMeasurement
  • WIPO sectorInstruments

Abstract

Systems and methods are described to identify motion events on a sloped surface, such as a mountainside, using transmitted and received radio frequency (RF) chirps. A one-dimensional array of receive antennas can be digitally beamformed to determine azimuth information of received reflected chirps. Elevation information can be determined based on time-of-flight measurements of received reflected chirps and known distances to locations on the sloped surface. Motion events may be characterized by deviations in return power levels and/or return phase shifts. The systems and methods may, for example, be used to provide real-time detection of avalanches and/or landslides.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.