ECM and M982 Excalibur question.

[Alexey K]

M982 Excalibur uses GPS guiadance which is affectable by electroinc countermeasures (GPS jamming).

Does ECM level set in mission properties affect precisionof Excalibur in game?

[Vanir Ausf B]

At medium ECM level PGMs can't be called in at all, although AFAIK this really should only apply to US PGMs.

Edited February 20, 2015 by Vanir Ausf B

[Alexey K]

At medium ECM level PGMs can't be called in at all, although AFAIK this really should only apply to US PGMs.

 

Laser-guided PGM should be callable but with appropriately increased timing (due to communication network disruption).

[Vanir Ausf B]

Yeah, it's been reported.

[Agiel]

A lot of PGMs of that vein usually have a back-up INS mode that keeps track of GPS data from either the launching platform (assuming that it wasn't in a communications denied environment) or the last time the round itself had a good GPS fix, and would switch to INS guidance mode if it figures out that "something is wrong". That said, it *is* INS guidance, so circular error probability might suffer given the accumulated deviations that result from minute errors, changes in atmospheric conditions, and so forth.

[Apocal]

A lot of PGMs of that vein usually have a back-up INS mode that keeps track of GPS data from either the launching platform (assuming that it wasn't in a communications denied environment) or the last time the round itself had a good GPS fix, and would switch to INS guidance mode if it figures out that "something is wrong". That said, it *is* INS guidance, so circular error probability might suffer given the accumulated deviations that result from minute errors, changes in atmospheric conditions, and so forth.

 

Excal does have an IMU that performs only bit worse than GPS guidance. It only kicks in once the GPS signal gets jammed, so the error is minimized.

Edited February 20, 2015 by Apocal

[nsKb]

Excal does have an IMU that performs only bit worse than GPS guidance. It only kicks in once the GPS signal gets jammed, so the error is minimized.

 

One has to wonder why excals can't be used in ECM environments in CMBS then?

Edited February 21, 2015 by nsKb

[Apocal]

One has to wonder why excals can't be used in ECM environments in CMBS then?

 

Same reason laser-based precision artillery can't, I presume.

[SeinfeldRules]

If you can't get an accurate grid from the observer (due to GPS jamming intefering with his target location equipment), then the round will still miss it's target. That is what it is most likely representing. Excal may be a precise round, but it will just miss it's target very precisiely if your target location is not accurate.

Edited February 21, 2015 by SeinfeldRules

[Vanir Ausf B]

One has to wonder why excals can't be used in ECM environments in CMBS then?

I think the assumption is that the jamming has been ongoing and continuous from before the scenario began.

Plus what Seinfeld said.

Edited February 21, 2015 by Vanir Ausf B

[nsKb]

If you can't get an accurate grid from the observer (due to GPS jamming intefering with his target location equipment), then the round will still miss it's target. That is what it is most likely representing. Excal may be a precise round, but it will just miss it's target very precisiely if your target location is not accurate.

 

Correct, had a brainfart and totally forgot the GPS coordinates were not know ahead of time (like a strike against a fixed target).