Global position system (GPS) multiplexed receiver
US4485383A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Dec 1, 1980 |
| Grant date | Nov 27, 1984 |
| Priority date | — |
| Expiry date | Dec 1, 2000 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01S19/37
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A global position system (GPS) capable of multiple (two or more space vehicles) space vehicle (SV) multiplexing comprises an RF energy receiver for receiving high and low frequencies (L.sub.1 and L.sub.2) from a plurality of SVs on different codes, a switching means for alternately switching the RF receiver between the coded L.sub.1, L.sub.2 signals for detection, a digital processing means, replica coded L.sub.1, L.sub.2 signal producing hardware, and a coherent time and frequency synthesis means, said digital processing means connected to the RF receiver, coherent time and frequency synthesis means, and replica coded L.sub.1, L.sub.2 signal producing hardware for producing for the RF receiver replica coded L.sub.1, L.sub.2 signals for each SV to be tracked and adjusting with respect to the coherent time and frequency synthesis circuit the states of the hardware replica receiver signals to align them with corresponding signals of each of the SVs at a rate that supports sampled data closed-loop tracking of the SVs without reacquisition of each SV being tracked.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.