4 ms·
This paper says the downlink uses a rate 1/6 forward ECC -- 6 encoded bits for every 1 message bit. From the context, the ~1 kbps figure should mean the informa
by throwaway_yy2Di 12y ago
This paper says the downlink uses a rate 1/6 forward ECC -- 6 encoded bits for every 1 message bit. From the context, the ~1 kbps figure should mean the information rate; the tone rate would be 6x higher.
6.3. DOWNLINK SYSTEM PERFORMANCE
The downlink card in each IEM is the exciter for the TWTAs
and encodes frame data from the spacecraft C&DH system into
rate 1/6, CCSDS turbocoded blocks.
http://www.boulder.swri.edu/pkb/ssr/ssr-fountain.pdf http://www.boulder.swri.edu/pkb/ssr/ssr-fountain.pdf
and more details,
http://www.boulder.swri.edu/~tcase/NH%20RF%20Telecom%20Sys%20ID1369%20FINAL_Deboy.pdf http://www.boulder.swri.edu/~tcase/NH%20RF%20Telecom%20Sys%2...