Threshold - Novatel WAAS G-III User Manual

Commands

4.4.28 THRESHOLD

This command controls the signal acquisition, steady-state-lock signal and cross-correlation thresholds.

The cross-correlation threshold parameter is used only for L1 C/A GPS, L1 C/A SBAS and L5
GPS signal types.
Valid States:
Valid Modes:
Acceptable Ports:
Syntax:
THRESHOLD signal acquisition lock crosscorr [svChan]
Example:
THRESHOLD L1ca 35 15 25
THRESHOLD L1geo 36 26 36 18
Field Field Name
1 signal
2 acquisition
3 lock
4
crosscorr
b
5
svChan
a. A cross correlation value must be specified for L1C, L2 P(Y), L2C, and L5 SBAS, but this value is not
used.
b. The svChan field must be specified only for SBAS channels.
For L1 C/A SBAS signal types, the range is from 18 to 25.
For L5 SBAS signal types, the range is from 26 to 33.
The threshold values must be specified per channel for SBAS signal types.
WAAS G-III Reference Receiver User Manual Rev 1
Configuration, Operational
Normal
Data
Signal type
Acquisition power threshold (dBHz)
Steady-state tracking lock threshold (dBHz)
Cross-correlation power threshold at which
a
cross-correlation checks are performed (dBHz)
SV channel to which the parameters are applied.
This field is only accepted for the SBAS SV channels
and must be specified.
[Optional]
Description
Chapter 4
Range Precision
L1ca
L1geo
L1C
L2py N/A
L2C
L5gps
L5geo
25-80 Int
10-80 Int
10-80 Int
18-33 Int
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