Position update, how does it work?

[Kerbo 416]

Hello, there's very little documentation regarding the Position Update feature, how does it work? could it correct a faulty INS alignment? what's the procedure for using it? does it have a desg mode? 

 

[uboats]

1. enter PU page, you need to select a channel with known coord, i.e. channel 10 or 30 or 45 etc

2. the selected PU channel with correct latlon should have a visual reference (i.e. at the coord of channel 10, there's a factory etc)

3. then when you fly over the reference (i.e. factory), press the PU button again, your INS pos should be fixed to the correct one and err eliminated

Edited April 27, 2021 by uboats

[SuumCuique]

Is flyover the only way, or can it (in the future) be updated via a designation, so through the targeting pod or AG radar?

[uboats]

currently ofly only

later dsg planned

[Kerbo 416]

7 hours ago, uboats said:

1. enter PU page, you need to select a channel with known coord, i.e. channel 10 or 30 or 45 etc

2. the selected PU channel with correct latlon should have a visual reference (i.e. at the coord of channel 10, there's a factory etc)

3. then when you fly over the reference (i.e. factory), press the PU button again, your INS pos should be fixed to the correct one and err eliminated

 

can this be used to correct heading as well or Position only?

 

[DarkStar79]

But i guess all of this is unnececary when you use the INS+GPS?  So why not use that?

[Mustang25]

2 hours ago, DarkStar79 said:

But i guess all of this is unnececary when you use the INS+GPS?  So why not use that?

because some people like to fly differently and work with all the different systems on an aircraft. 

[Kerbo 416]

6 hours ago, DarkStar79 said:

But i guess all of this is unnececary when you use the INS+GPS?  So why not use that?

this is meant in case the GPS fails while you're in a fast alignment

[LastRifleRound]

Also some aitcraft every few flights are flown decoupled so natural INS error correction algos aren't thrown off by errors being masked by the GPS being on all the time.

 

Not sure if true for JF17, but true for the Harrier.

[oyen20]

On 4/27/2021 at 10:55 AM, uboats said:

currently ofly only

later dsg planned

Has DSG been implemented yet? I didn't know it had this feature. Does it work with all designate (radar, WMCD, HUD) like the markpoint feature?

Edited April 27, 2023 by oyen20