SC ques..

1a)define multiple access and multiplexing..explain abt the TDMA frame strctre in detail..
B)wat ar the diffrnced b/w TDMA,CDMA,FDMA
2a)explain abt spread spectrm trnsmssn and recptn in CDMA..
2b)wat is DAMA and FAMA..
3a)wat ar the fnctns of earth station tracking system to be performed..
3b)explain the functional elemnts of a satellite tracking system...
4a)wat ar the major sources of error in a GPS reciever..
4b)explain the technique of range error budget used to provide accrcy in GPS C/A code reciever..
5a) explain abt differential GPS..
5b)wat is satellite snal aquisition..
6)explain abt the orbit considerations in satellite commnctns..
7)explain in details abt trackng system in earth statn..
8)explain the very smal aperture terminals(VASTS)