correct as is TGP jumps to random location

[dutchili]

Why does the TGP jumpt to random (?) locations instead of maintaining an INR point track?

I this scenario i lock a BTR-80 with the TGP (TMS up). The lock soon changes to a different object.

After making two hooks, the TGP is pointing somewhere completely different. It jumps from object to object.

Is this a bug? And if not, what am I doing wrong?

tgp jump.trk

[KengBeng]

Hope they fix this issue. Encountering the same issue with the TGP in the Viper! 

<following this topic> 

[PawlaczGMD]

Not sure that this is a bug. You should switch to INR AREA with TMS RIGHT when you're going to lose sight.

A point track is trying to track a specific object, so if you mask the view, it might not be able to hold a contrast lock and jump to a different point. Point track works best if you are able to zoom in close on an object that is resolved from other nearby targets and not mask it.

So just change tracking to INS AREA if you can't satisfy these conditions, you don't really need a point track for far and stationary targets.

 

[darkman222]

If you are about to mask the TGP you have to revert from point track to inertial tracking. TMS down once. The cross will open up again and youre good to mask the TGP. If the TGP screen looks like that youre good to mask the TGP.

 

 

 

 

Although there is a problem with the TGP not being able to hold point track, especially with buildings around, that dont obstruct the view but make the TGP jittering around. Not really sure if its map related. But it seems to be very pronounced in Afghanistan map.

If I find the time I could try to reproduce a short track file.

Edited October 22, 2024 by darkman222

[Lord Vader]

Hi all

In normal circumstances, the TPOD will hold an optical lock fairly well. However, if something obstructs the view, effectively interfering with the optical lock, of course the point track can have trouble maintaining track. As suggested, area track should be engaged in such conditions. Which seems to be the conditions set by the original reporter.

However, we are interested in seeing your tracks if this is a recurrent issue as described. Please do post tracks here for our analysis.  

[dutchili]

INR AREA seems to be reliable in a few tests. Point track was more reliable than before. So this hints at something dynamic. (same mission).

The problem seems worse IN WHOT compared to TV.

[darkman222]

@Lord Vader The issue is not reliably reproduceable. What seems to contribute is if the TGP is slewed away from the steerpoint to look for targets. 3-4 nw were sufficient in my test. Probably also the map (Afghanistan) contributes, as this happened very often on this map.

 

It happens when you try to go from INR track to point track. Then the TGP jumps away from the desired target.

 

See at the end of my track file. Sorry I had to try different things to get it to show clearly.

 

So when I TMS up while in INS track the TGP lock seems to drift or better jump away multiple times until it establishes lock on a random place.

It looks like I pressed TMS up multiple times, but I did not. The TGP tried to re-lock multiple times.

For better illustration I have uploaded a video of the exact moment it happens. Further attempts to get a point track lead to the same result.

 

tgp lock jumps INS to Point.trk

[dutchili]

13 minutes ago, darkman222 said:

@Lord Vader The issue is not reliably reproduceable. What seems to contribute is if the TGP is slewed away from the steerpoint to look for targets. 3-4 nw were sufficient in my test. Probably also the map (Afghanistan) contributes, as this happened very often on this map.

 

It happens when you try to go from INR track to point track. Then the TGP jumps away from the desired target.

 

See at the end of my track file. Sorry I had to try different things to get it to show clearly.

 

So when I TMS up while in INS track the TGP lock seems to drift or better jump away multiple times until it establishes lock on a random place.

It looks like I pressed TMS up multiple times, but I did not. The TGP tried to re-lock multiple times.

For better illustration I have uploaded a video of the exact moment it happens. Further attempts to get a point track lead to the same result.

 

tgp lock jumps INS to Point.trk 4.15 MB · 1 download

This video is exactly what i experienced while making the uploaded track.
INS AREA was stable when i just tested it.

[dutchili]

@BIGNEWY: we can close this thread with the conclusions:
- AREA lock (TMS RIGHT) can be used when one expects LOS to be lost
- INR POINT track (TMS UP) requires improvement as the TGP can jump to different objects that (somehow) look equal to the TGP.

[BIGNEWY]

15 minutes ago, dutchili said:

@BIGNEWY: we can close this thread with the conclusions:
- AREA lock (TMS RIGHT) can be used when one expects LOS to be lost
- INR POINT track (TMS UP) requires improvement as the TGP can jump to different objects that (somehow) look equal to the TGP.

Done, thank you