Method and apparatus for tracking objects
US4298874A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Oct 24, 1978 |
| Grant date | Nov 3, 1981 |
| Priority date | — |
| Expiry date | Oct 24, 1998 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01S1/42
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Two spaced bodies, each including at least two independently oriented radiating antennas, are in communication with each other by such means as an electromagnetic field. The first body receives radiation transmitted from the second body and establishes the pointing angles to the second body with respect to the first body coordinate reference frame. The field received by the first body can include information defining the second body's pointing angles to the first body with respect to the second body's coordinate reference frame and the relative roll about their mutually aligned pointing axis. These pointing angles and relative roll are sufficient for determining the orientation of the first body relative to the second body. The second body receives radiation transmitted from the first body and establishes the pointing angles to the first body with respect to the second body. Analogously, radiation received by the second body can include information defining the first body's pointing angles with respect to the first body coordinate reference frame to the second body and the relative roll between their mutually aligned pointing axes. As before, this information is sufficient for the …
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.