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Javad DPOS and Triumph 1/LS
- Thread starter Jason Scott
- Start date
Thanks, Adam. I got alot from Michael. I expect a problem is clear for me now. OPUS is couching while process T2 data converted with teqc into RINEX. We have submitted alot of files to OPUS last week. I was very surprised at OPUS behavior. Sometime it accepts file for post process sometime it declines to process the file that was processed successfully before. There are many additional messages in T2 jps file besides raw GNSS data. It confuses teqc.
Have you tried converting the files with JPS2RIN and then submitting them to OPUS to see if it returns different results?
I used to try teqc conversion to RINEX 2.11 following OPUS way of post processing. In the case of 'No solution' I tried jps2rin.
Below are tables of residuals for Triumph- 2 receiver and JAVAD Sigma receiver with RingAnt DM with SCIS. Both receivers were mounted on the same point on the roof of JAVAD plant. Triumph-2 session was 22 hours long. Sigma session was about 5.5 hours. OPUS and DPOS coordinates matches each other within 0.001m (as was shown on a table above). RINEX 2.11 observation were used for OPUS (jps2rin converted). File jps format were sent to DPOS.
Than I've splited full sessions by two and sent to OPUS and DPOS. Than I splitted by two once more and so on. Every time I have sent data to OPUS and DPOS to get residuals. Residual = partial session height - full session height.
Than I've splited full sessions by two and sent to OPUS and DPOS. Than I splitted by two once more and so on. Every time I have sent data to OPUS and DPOS to get residuals. Residual = partial session height - full session height.
Robert P Stenerson
Active Member
Robert P Stenerson
Active Member
The problem fixed. DPOS is running now.
Robert P Stenerson
Active Member
Thanks Alexey, I just got in from the field and tried again using my Triumph-LS, and was successful.
Ron Booher
Member
I used my LS and T-2 in the field on a 57 acre job, the T-2 batteries seemed to hold up but my 1w radio battery was done about 4:30 hrs into the job. Can you hook up an external battery to the radio? Also I got good fixes most places right away- others it took a bit then took off. When I got into pines and thick high deciduous I couldn't get a continuous fix, the engines floated and once in a while got 6 to 2. I forgot the external antenna for the LS, could this be the reason for low or no fixes about 2000' from the base? Thanks.
Ron,
Several things...
Your 1 watt radio should last all day, even at 5hz. Lets make sure we get a full recharge and test.
Yes you can power the 1 watt radio with the same cable you charge it with. I have a few 5 amp hour batteries that I use for this purpose. You can even run it full time off the the AC charger.
I never use my external UHF antenna. BTW...do you have good internet access in your work area?
As long as the top right communication status button in the Action screen is green, you have sufficient communication from the base for RTK corrections.
We have a command in the V6 screen named "Reset Tracking". Use this whenever you have a drastic change in your environment, such as going from the woods into the open, and also the reverse. If my LS is not getting a fix like I know it should, pressing "Reset Tracking" is the first solution. If that does not work, you can always try a reboot.
Whenever I hear someone use the term "I could not get a continuous fix", I also suspect that they are not using "Verify with Resets". The speed of performing your measurements in the most difficult locations is significantly improved by using "Verify with Resets". This is because a bad single engine fix never gets in the way of a good fix coming second, and not matching the first engine which may be incorrect, and therefore reset.
My personal settings in the woods are Verify with Resets, a Confidence Level of 7, 3 Engine Fix Minimum, and 45 epochs. I use Auto Repeat, and collect several points for my personal confidence.
Do not hesitate to call. 614 595 9412
Several things...
Your 1 watt radio should last all day, even at 5hz. Lets make sure we get a full recharge and test.
Yes you can power the 1 watt radio with the same cable you charge it with. I have a few 5 amp hour batteries that I use for this purpose. You can even run it full time off the the AC charger.
I never use my external UHF antenna. BTW...do you have good internet access in your work area?
As long as the top right communication status button in the Action screen is green, you have sufficient communication from the base for RTK corrections.
We have a command in the V6 screen named "Reset Tracking". Use this whenever you have a drastic change in your environment, such as going from the woods into the open, and also the reverse. If my LS is not getting a fix like I know it should, pressing "Reset Tracking" is the first solution. If that does not work, you can always try a reboot.
Whenever I hear someone use the term "I could not get a continuous fix", I also suspect that they are not using "Verify with Resets". The speed of performing your measurements in the most difficult locations is significantly improved by using "Verify with Resets". This is because a bad single engine fix never gets in the way of a good fix coming second, and not matching the first engine which may be incorrect, and therefore reset.
My personal settings in the woods are Verify with Resets, a Confidence Level of 7, 3 Engine Fix Minimum, and 45 epochs. I use Auto Repeat, and collect several points for my personal confidence.
Do not hesitate to call. 614 595 9412
Ron Booher
Member
There is no wifi let alone cell service in this pert of Pennsylvania, so I will depend on my Triumph 2 all the time. My battery was fully charged both sessions and only lasted 4 hours. I was reading 100% communication, so being new to RTK I was speculating why I was not getting consistent fixes. My LS is set to verify with resets, confidence @ 25, engine fix @ 2, with 120 epochs. I thought about lowering the confidence level a little in thick cover, looking for some guidance thanks.
Verification resets the engines multiple times, so you should be seeing fix-float-fix multiple times after pressing start. 25 is pretty stringent for confidence. I typically use 10. This number determines how many times the receiver will automatically go from fix to float. Now, a confidence of 10 will not catch all bad fixes. On the back side of that observation, we use validation, which does one last check on the fix by resetting the engines at the very end. The caveat to this is that in bad environments you need some time between the first check (verify) and the last check (validate). How much time? Some of the experienced users recommend 3 minutes (at 5hz that's about 900 epochs). This is specifically for shots in difficult places. The three minutes appears to provide just enough time for satellites to change position just enough for the multipath to change. This gives the receiver a new perspective on incoming signals producing a better check between the first and last fix. The initial verification will catch most of the bad ones, validation after a few minutes will screen out the ones that get through.
As for battery life, I don't have enough experience with this modem to know what to expect, but as John said, you can certainly use an external battery with it using the power cord you charge with.
As for battery life, I don't have enough experience with this modem to know what to expect, but as John said, you can certainly use an external battery with it using the power cord you charge with.
Ron Booher
Member
Going back to the job, increasing epochs and lowering the confidence level to see what happens.
I prefer confidence of 25 because I do not want to wait for 10 min for it to just throw out all of the data for a bad fix when it goes to validate at the end. I want it to find the right fix on the front end.
That is the beauty of this system. It is customizable for your environment and your preferred method.
As far as you only getting 2000', I know your terrain and with a 1 watt radio that is going to be close to what your maximum range is going to be. The higher in the air you get your radio the further you will be able to get. Also the small external antenna on your LS will get you a little further as well.
That is the beauty of this system. It is customizable for your environment and your preferred method.
As far as you only getting 2000', I know your terrain and with a 1 watt radio that is going to be close to what your maximum range is going to be. The higher in the air you get your radio the further you will be able to get. Also the small external antenna on your LS will get you a little further as well.
Ron Booher
Member
I was at the same job and out in the open I got 6 fixes no problem, but on a lane fairly open I had real trouble getting 1 fix. When I went back to close the session it said no connection. Could it be communicating on Bluetooth only, when in the woods it ran for 5 seconds collecting then it floated for quite a while.
Ron Booher
Member
I had 100% connection the whole time except on one setup the connection turned orange and seemed to be counting down. I like the setup you have and it worked good except for getting in the cover.
When in multipath area it work different than all other RTK receivers. It has two phases. The first phase is where the receiver gets a single engine fix and then it will reset the engines. Once it has counted 25 single engine fixes that fall within a 0.13 horizontal and 0.23 vertical group it stops resetting the engines and then will start counting up epochs. It can get up to 10 groups of points until it reaches the specified confidence level or engine resets. Do not get discouraged if it takes some time to get the shot. Think about how long it would take you to traverse.
This will take time in multipath areas (tree cover or buildings). Coniferous trees are the worst.
As far as your radio range it sounds as though it was just out of range. I have had that problem where I could raise the pole a foot and get signal. Drop it to the ground and loose signal.
This will take time in multipath areas (tree cover or buildings). Coniferous trees are the worst.
As far as your radio range it sounds as though it was just out of range. I have had that problem where I could raise the pole a foot and get signal. Drop it to the ground and loose signal.
Ron Booher
Member
Would a stronger radio help?