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DIGISONDE-4D
SYSTEM MANUAL
VERSION 1.2.11
3-10 SECTION 3 - OPERATING INSTRUCTIONS
Figure 3-3: Frequency Multiplexing as a Means to Increase Doppler Frequency Resolution.
3:11. In order to accommodate specification of the frequency multiplexing in Digisonde
®
programs, three
program parameters are used (see Figure 3-4):
a. Fine frequency step (FFS) = frequency step inside a block of multiplexed frequencies
b. Number of fine frequency steps (NFS) in the block
c. Coarse frequency step (CFS) = frequency step between blocks of multiplexed frequencies
Figure 3-4: Frequency Multiplexing in Ionogram and Drift Measurements.
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