Automatic astroposition determination apparatus
US4181851A · kind A · utility
6Cited by
3References
8Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 24, 1978 |
| Grant date | Jan 1, 1980 |
| Priority date | — |
| Expiry date | Feb 24, 1998 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01S3/7864
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An automatic astroposition determination apparatus for performing measurets with improved precision and accuracy. A rectangular photosensor array is mounted in the focal plane of a theodolite and as the image of a star moves across the sensor array, a display of the image position and the time elapsed since the commencement of tracking is provided. Circuitry is provided to ensure that the leading edge of the star image on the array is tracked irrespective of how many photosensor elements the image overlies and irrespective of the direction of image transit on the array.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.