tpchandler
New Member
On the Collect action screen (see clip above), what exactly does the 10 and the +9 represent?
Satellite Indicator
- Thread starter tpchandler
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On the Collect action screen (see clip above), what exactly does the 10 and the +9 represent?
10 is the number of satellites being tracked and +9 is the number of satellites above the elevation mask that are blocked by obstructions.
tpchandler
New Member
OK. Thanks. To clarify, does that mean that 9 of the 10 being tracked are being blocked? Does the count include GPS, GLN, and all others?
I have elevation mask set at 10 degrees. At a moment in time when the TLS was indicating 10 +8 pressing the SAT icon provided access to the following 2 screens.
On this first screen, are the 10 represented by blue text? What does the "SS" column indicate?
On this second screen, what does the red and grey indicate?
I have elevation mask set at 10 degrees. At a moment in time when the TLS was indicating 10 +8 pressing the SAT icon provided access to the following 2 screens.
On this first screen, are the 10 represented by blue text? What does the "SS" column indicate?
On this second screen, what does the red and grey indicate?
I would say that 10 is the number of satellites being used to determine the current position. The LS tracks several satellites that are not used in the solution. The +, as Matt said, are those satellites in view that are not currently used in the solution (obstructed or below the mask angle).
SS is a code indicating how the satellite is being used. (Help button lists these codes).
00 CA/L1 data used for position computation
58 CA/L1 L2C measurements used in RTK processing
55 CA/L1 P/L2 measurements used in RTK processing
00 CA/L1 data used for position computation
58 CA/L1 L2C measurements used in RTK processing
55 CA/L1 P/L2 measurements used in RTK processing
Does the count include GPS, GLN, and all others?
The count includes only those satellites that can be used for RTK positioning. This is a change to the software. Previously the X+x count included all satellites in view.
The count includes only those satellites that can be used for RTK positioning. This is a change to the software. Previously the X+x count included all satellites in view.
I checked this more and yes 10 is the number of satellites used to determine the current position. The +number does not include satellites below the elevation mask. If you change the elevation mask to 0 you will see this +number increase.
tpchandler
New Member
Matt, Shawn,
Thanks for the rapid fire replies!
I apologize in advance for wearing you out on this topic, but I really want to understand.
I've studied the info available when pressing the help button.
Again, The unit was showing 10+8 when I captured the chart below:
Is the following a correct interpretation for the first two lines of this SAT chart?:
SV GPS1 is at 21⁰ and rising, Azimuth bearing from current position is 150⁰, Green "0" in SS column indicates CA/L1 data is being used in calculating autonomous position, L1…L2C signal strength indicators in red indicate more than 6dB degradation, and Blue signal strength indicator in L5 column indicates it is within 3dB of expected strength. So, conclusion is that Javad T-LS is removing enough degradation in L1 signal to use it in autonomous position, but L5 signal is not being used because the T2 is not L5 capable.
SV GPS7 is at 67⁰ and rising, Azimuth bearing 346⁰, Blue "58" indicates this SV is used in calculating the RTK position using CA/L1 and L2C measurements, Red numbers in L1 and L2C columns indicate more than 6dB signal degradation. So, my conclusion is that Javad T-LS is removing enough degradation in L1 and L2C signals to use this SV in an RTK position.
And so on.....for the other lines. The main thing for quick reference is that numbers in the SS column that are blue indicate RTK, green is Autonomous, red is not used, and grey is unhealthy.
Counting Blue numbers in the SS column should yield the number of SATs being used in calculating the current RTK position (SATs currently in common with the base unit?). In this case, the count is 11. The T-LS was showing 10, but in the time between seeing that number on the collect action screen and pressing the button to display the chart above it changed from 10 to 11.
Counting SVs in gray text in the SAT column should yield the number of SVs that should be visible in the area currently occupied but blocked by obstructions. In this case, the count is 8, which agrees with the "+x" number shown on the collect action screen.
Is all this correct?
Does "--" in a column indicate no data?
Best Regards,
Todd
Thanks for the rapid fire replies!
I apologize in advance for wearing you out on this topic, but I really want to understand.
I've studied the info available when pressing the help button.
Again, The unit was showing 10+8 when I captured the chart below:
Is the following a correct interpretation for the first two lines of this SAT chart?:
SV GPS1 is at 21⁰ and rising, Azimuth bearing from current position is 150⁰, Green "0" in SS column indicates CA/L1 data is being used in calculating autonomous position, L1…L2C signal strength indicators in red indicate more than 6dB degradation, and Blue signal strength indicator in L5 column indicates it is within 3dB of expected strength. So, conclusion is that Javad T-LS is removing enough degradation in L1 signal to use it in autonomous position, but L5 signal is not being used because the T2 is not L5 capable.
SV GPS7 is at 67⁰ and rising, Azimuth bearing 346⁰, Blue "58" indicates this SV is used in calculating the RTK position using CA/L1 and L2C measurements, Red numbers in L1 and L2C columns indicate more than 6dB signal degradation. So, my conclusion is that Javad T-LS is removing enough degradation in L1 and L2C signals to use this SV in an RTK position.
And so on.....for the other lines. The main thing for quick reference is that numbers in the SS column that are blue indicate RTK, green is Autonomous, red is not used, and grey is unhealthy.
Counting Blue numbers in the SS column should yield the number of SATs being used in calculating the current RTK position (SATs currently in common with the base unit?). In this case, the count is 11. The T-LS was showing 10, but in the time between seeing that number on the collect action screen and pressing the button to display the chart above it changed from 10 to 11.
Counting SVs in gray text in the SAT column should yield the number of SVs that should be visible in the area currently occupied but blocked by obstructions. In this case, the count is 8, which agrees with the "+x" number shown on the collect action screen.
Is all this correct?
Does "--" in a column indicate no data?
Best Regards,
Todd
You understand it as well as I do now, Todd. 
Yes this looks correct but the grey SS codes don't necessarily mean they are unhealthy. Code 10 is used for unhealthy satellites. The others can be looked up in the help screen.