Ismsignalcontrol Controls Gistm Log Output - Novatel GPStation-6 User Manual

4.2.5

ISMSIGNALCONTROL Controls GISTM log output

This command allows the user to control which signals from which satellite systems are used in the
scintillation measurements and output in the GISTM logs.
All available signals types are enabled by default for raw scintillation measurement and TEC output.
For some applications, you may want to reduce the amount of data being output by the receiver. Use
this command to customize the output by enabling or disabling specific signal types from being output
in the GISTM logs.
The raw measurement output control parameter affects the ISMRAWOBS, ISMDETOBS, and
ISMREDOBS logs. The TEC output control parameter affects the ISMRAWTEC and ISMREDTEC
logs. If a primary signal, such as GPSL1CA is disabled for TEC output, all the associated TEC
combinations are also disabled (e.g., GPSL1CA-GPSL2PY, GPSL1CA-GPSL5, and GPSL1CA-
GPSL2C).

L2P(Y) scintillation measurements and observations are disabled by default.
L2P(Y) is an encrypted signal and is therefore tracked using a proprietary semi-codeless
technique. This results in increased noise on the signal and therefore L2P(Y) measurements
may not be suitable for computing scinitillation phase and amplitude indices. L2P(Y) is however
suitable for TEC computations and L2P(Y) TEC computations are enabled by default.
Abbreviated ASCII Syntax:
ISMSIGNALCONTROL signal obs_control TEC_control
Input Example:
ismsignalcontrol glol1ca disable disable
Field Field Type
1 ISMSIGNALCONTROL
Header
2 Signal Type
3 Enable observations
51
ASCII Binary
Value Value
- - This field contains the
command name or the
message header
depending on whether
the command is
abbreviated ASCII,
ASCII or binary,
respectively
Signal type to configure
(refer to Table 11, Signal
Type)
0 Do not output raw
DISABLE measurement for this
signal type
1 Enable output of raw
ENABLE measurements for this
signal type
Binary
Description
Format
-
ENUM
ENUM
GPStation-6 User Manual Rev 2
Commands
Message ID: 1398
Binary Binary
Bytes Offset
H 0
4 H
4 H+4