User's Manual Part 2

Processing Algorithms (draft)
RVP8 User’s Manual
April 2003
5–56
Case 2: Simultaneous Transmit and ReceiveĆ STAR (HH, VV)
Case 3: Alternating Transmit SingleĆChannel Receive (HH, VV)
dBZo from HH Channel TTY Setup Question Responses
Calculate T, Z, V, W from: H–Xmt V–Xmt Co–Rcv Cx–Rcv
HH YES NO ––– –––
VV (gdr
–1
weighting) NO YES ––– –––
HH+VV (gdr
–1
weighting) YES YES ––– –––
A fundamental difference between these two cases is that for all standard moment processing
choices, the STAR case has double the number of samples as compared to the single-channel
alternating case. However, the processing is otherwise identical.
HH Channel
Since the HH channel is directly calibrated this is the recommended choice. Processing is
identical to a conventional radar.
VV Channel
In this case, GDR is used to adjust the autocorrelations as follows:
T
0
Ą +Ą gdr
*1
ĄT
vv
o
R
0
Ą +Ą gdr
*1
ĄR
vv
o
R
1
Ą +Ą gdr
*1
ĄR
vv
1
R
2
Ą +Ą gdr
*1
ĄR
vv
2
NĄ +Ą gdr
*1
ĄN
v
These adjusted autocorrelations are then used as input to the standard moment processing
algorithms with dBZo calibrated with respect to the HH channel.