Alexey K Posted February 20, 2015 Share Posted February 20, 2015 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? 0 Quote Link to comment Share on other sites More sharing options...
Vanir Ausf B Posted February 20, 2015 Share Posted February 20, 2015 (edited) 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 0 Quote Link to comment Share on other sites More sharing options...
Alexey K Posted February 20, 2015 Author Share Posted February 20, 2015 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). 0 Quote Link to comment Share on other sites More sharing options...
Vanir Ausf B Posted February 20, 2015 Share Posted February 20, 2015 Yeah, it's been reported. 0 Quote Link to comment Share on other sites More sharing options...
Agiel Posted February 20, 2015 Share Posted February 20, 2015 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. 0 Quote Link to comment Share on other sites More sharing options...
Apocal Posted February 20, 2015 Share Posted February 20, 2015 (edited) 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 1 Quote Link to comment Share on other sites More sharing options...
nsKb Posted February 21, 2015 Share Posted February 21, 2015 (edited) 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 0 Quote Link to comment Share on other sites More sharing options...
Apocal Posted February 21, 2015 Share Posted February 21, 2015 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. 0 Quote Link to comment Share on other sites More sharing options...
SeinfeldRules Posted February 21, 2015 Share Posted February 21, 2015 (edited) 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 0 Quote Link to comment Share on other sites More sharing options...
Vanir Ausf B Posted February 21, 2015 Share Posted February 21, 2015 (edited) 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 0 Quote Link to comment Share on other sites More sharing options...
nsKb Posted February 22, 2015 Share Posted February 22, 2015 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). 0 Quote Link to comment Share on other sites More sharing options...
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