Loran compensated magnetic compass
US4024382A · kind A · utility
39Cited by
3References
7Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Sep 8, 1975 |
| Grant date | May 17, 1977 |
| Priority date | — |
| Expiry date | Sep 8, 1995 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01C17/38
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A magnetic compass system in which an output signal indication is produced of true heading. An electronic navigation receiver such as a Loran or Omega receiver is employed to provide sequential indications of present position which are processed to produce a signal representing the average course made good for a selected heading. The course made good signal is processed with a signal indication of magnetic compass heading to correct for deviation and variation errors and yield an output signal representing true heading.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.