This article outlines various methods and their limitations establishing accurate positional fixes of moving ships or aircrafts, and describes a modulation phase comparison instrument operating in "S" band frequency range, providing continuous range readings accurate to within 1,5 meters at a range of up to 250 km. Its carrier is tunable from 2,8 to 3,3 GHz. Its method of modulating the microwave carrier with a series of frequencies ("pattern frequencies") provide a resolution in range measurement of 0,1 meters. Pattern frequency modulation is applied to both, ship-based and shore-based instruments. Output can be printers or other recorders.
Precision position-finding under dynamic conditions
Praezisions-Standortbestimmung unter dynamischen Bedingungen
Systems Technology ; 22 ; 32-35
1975
4 Seiten, 3 Bilder, 1 Quelle
Article (Journal)
English
Dynamic Piston Position Measurements Using a Laser Range-Finding Technique
SAE Technical Papers | 1990
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