gps

[norm]

Where can i find on my instrument panel my current gps location?

[Frederf]

Technically there is no GPS system in the Ka50. It uses the GLONASS system of the GNSS concept; GNSS is the generic term for all global navigation satellite systems which GPS and GLONASS are specific examples.

 

But your GLONASS coordinates are displayed in the lower left corner of the ABRIS NAV page along with several other locations in the ABRIS device.

 

The PVI-800 has a self-coordinates button that shows the current INU coordinates, which considering INU drift is not modeled, is as accurate as the ABRIS numbers.

[sobek]

The PVI-800 has a self-coordinates button that shows the current INU coordinates, which considering INU drift is not modeled, is as accurate as the ABRIS numbers.

 

Sorry, but this is wrong. INU drift IS modelled, or what do you think the INU fix procedure is for? ;)

[AlphaOneSix]

INU drift is not currently modeled. Perhaps at a later date. And at that later date, when INU drift is working, we will all already know the INU fix procedure, since it has worked from the beginning. :)

 

Some are led to believe that drift is modeled because coordinates do not line up perfectly between the mission editor and the game map. This is actually because one map is flat while the other actually represents the curvature of the earth, so the two maps do not mesh exactly the same.

[norm]

Ok thanks, i was trying the night patrol mission, and received a radio order to got to such and such location, so i will hopefully now be able to do that.

[ericinexile]

INU drift is not currently modeled. Perhaps at a later date. And at that later date, when INU drift is working, we will all already know the INU fix procedure, since it has worked from the beginning. :)...

 

Wasn't it modeled during the Beta phase? I ask because I remember a pre-release SimHQ review in which the reviewer was constantly doing fix updates to correct for what he considered to be a very inaccurate PVI-800.

[AlphaOneSix]

Wasn't it modeled during the Beta phase? I ask because I remember a pre-release SimHQ review in which the reviewer was constantly doing fix updates to correct for what he considered to be a very inaccurate PVI-800.

 

Well unless my memory has completely left me (not an impossibility), the discrepancy, again, was due to the differences between the maps. If you place an INU fix point at a specific point on the map in the mission editor, it will have different coordinates in the world map. You can perform an INU update, but to my knowledge, it doesn't actually do anything.

[sobek]

INU drift is not currently modeled. Perhaps at a later date. And at that later date, when INU drift is working, we will all already know the INU fix procedure, since it has worked from the beginning. :)

 

Some are led to believe that drift is modeled because coordinates do not line up perfectly between the mission editor and the game map. This is actually because one map is flat while the other actually represents the curvature of the earth, so the two maps do not mesh exactly the same.

 

Again, i stand corrected. Thought it was modelled.:doh:

[m0jo]

According to the manuals, the GNSS is correcting the INS drift, so the INS drift might be corrected if the GNSS is working correctly

 

7-20: MENU/CONTROL/K-041 sub-mode page

The K-041 page is used to check the status of the K-041 navigation and targeting system. When in “WORK” MODE, a countdown timer in seconds is displayed next to the TIME OUT field. This indicates the time until the next INS navigation fix from GNSS. Current aircraft coordinates; heading, track angle, and speed are also displayed here.

[EvilBivol-1]

INS drift is not currently modeled in Black Shark. Furthermore, the ABRIS does not provide INS updates either in the simulation or in real life, at least as per the information provided to ED at the time of modeling.

 

The ABRIS is capable of utilizing both the Russian GLONASS and the western NAVSTAR GNSS or either one.

 

There was a SimHQ preview video by BeachAV8R where his ABRIS was showing significant errors, but this was due to LOS obstructions in the mountains and - possibly - lack of NAVSTAR availability due to the mission coalitions set-up (if the U.S. is not on the same side as Russia in the mission, NAVSTAR is not available). INS updates were also in the video, but again, INS drift is not actually modeled, even though the correction procedure is.

[Frederf]

I too have read the page in the manual about the ABRIS that m0jo refers to. I think what was concluded was that the sim doesn't have the ABRIS/GLONASS update the PVI/INU despite the possible outward appearance that the ABRIS is supposed to do this.

 

Another interpretation is that the "INS fix" refers to the ABRIS's internal tracking of coordinates which has nothing to do with the PVI-800 system at all. For example, perhaps the ABRIS only gets GLONASS data every 30 seconds but extrapolates via a "virtual INU" on a more frequent basis so the numbers are more smooth for calculations.

 

In real life it's possible that the ABRIS has such a feature (ABRIS updating another nav system) but it was incompatible with the PVI or never completed.

 

On the other hand I think that it's possible to update the PVI or even specify wrong initial alignment coordinates to make the PVI and real coordinates differ with poor input, but the PVI doesn't drift naturally.