411
Set Command Library
SOM,SNR: Signal-to-Noise Ratio Mask
Function
This command is used to mask the signal observations that
do not meet the minimum signal-to-noise ratio you specify.
This means that only the observations meeting this
requirement will be output (all the others will be rejected).
This mask is enabled only after the “User-defined” option (9)
has been selected with the $PASHS,SOM command.
Command Format
Syntax
$PASHS,SOM,SNR,f1[,f2][*cc]
Parameters
Comments
•
The $PASHS,SOM,SNR command can only mask
particular signal data for which the SNR does not meet
your requirement. If however at the same time the L1CA
data are disabled, then all the satellite observations will
also be masked.
•
The $PASHS,SOM,SNR command equally affects all
GNSS systems and their signals, except GPS L1P(Y) and
L2P(Y). For these two signals, a hard-coded SNR
threshold is applied.
Examples
Setting SNR masks for both differential and raw data to
30 dBHz:
$PASHS,SOM,SNR,30*68
Parameter
Description
Range
Default
f1
Differential data mask. “0” means no mask.
0-60 dBHz 28
f2
Raw data mask. If s2 is omitted, then the
receiver will assume s2=s1. “0” means no
mask.
0-60 dBHz 28
*cc
Optional checksum
*00-*FF
Raw Data Masked by f2
Differential Data Masked by f1
MPC
DPC
ATM,RNX,SCN,0
All other messages
Summary of Contents for HDS800
Page 1: ...Reference Manual HDS800...
Page 16: ...x Enabling a Firmware Option 639 Decoding an NTRIP Source Table 639 Logging Raw Data 642...
Page 54: ...38 Receiver Description...
Page 104: ...88 Using the Web Server...
Page 189: ...173 Web Server Help Files Collection Configuration Tab...
Page 266: ...250 Using Serial Commands...
Page 606: ...590 Query Command Library...
Page 619: ...603 Data Output...
Page 628: ...612 Data Output...
Page 650: ...634 Troubleshooting...
Page 660: ...644 Other Procedures Memos...
Page 676: ...X XDR 110 112 587 Z Z Blade 1 ZDA 347 431 588...
Page 677: ......