Title :
Doppler Correction Of The Telecommunications Payload Oscillators In The UK T-SAT
Author :
Austin, J. ; Vilar, E. ; Domokos, J.
Author_Institution :
Portsmouth Polytechnic, Department of Electrical and Electronic Engineering, Microwave Telecommunications and Signal Processing Research Group, Anglesea Road, Portsmouth PO1 3DJ, England
Abstract :
The article gives values for the doppler shift of an L-band radio path between a UK observer and a 12 h period Molnya orbit satellite. Two doppler correction units for the local oscillators of the UK T-SAT payload are described, one utilising frequency locking and the other phase locking. A critical assessment of the performance of each unit is given.
Keywords :
Artificial satellites; Counting circuits; Doppler shift; Frequency; L-band; Local oscillators; Payloads; Phase noise; Satellite broadcasting; Surface acoustic waves; communications; doppler; frequency lock; phase lock; satellite;
Conference_Titel :
Microwave Conference, 1988. 18th European
Conference_Location :
Stockholm, Sweden
DOI :
10.1109/EUMA.1988.333915
