3D video-Doppler-radar (VIDAR) imaging system
US8009081B2 · kind B2 · utility
Inventors
Key dates
| Filing date | Oct 21, 2008 |
| Grant date | Aug 30, 2011 |
| Priority date | — |
| Expiry date | Apr 8, 2030 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01S19/14
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A moving sensor suite for imaging a scene has three Doppler radars, two moving and one fixed, a fixed video camera and a fixed GPS receiver. The Doppler radars measure the relative velocities between the radars and the scene, as well as the scene's electromagnetic reflectivity, while the video camera records the motion of the camera and the optical property of the scene. The correct registration of the Doppler radars and the camera is established by finding the intersections of the moving Doppler radar motion vectors with the image plane of the video camera. The scene features in the first frame are determined by Doppler circle intersections. The correspondences of the features in the next two frames are established by a feature matching operation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.