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Radar designation of JDAM targets - hit and miss?


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Posted
On 11/23/2023 at 12:30 PM, doedkoett said:

Well, I think I can confirm that my problem was GPS-related. I made a quick mockup of the mission I played, ran it twice - once with the year set to 1995, and the second time I set the year to 2020. The first time the bombs landed in a neat rectangle, just a little bit offset from the actual targets. The second time they were spot on. So I guess that mystery is solved.

I guess since I can´t blame the module, I will have to be mature enough to blame my friend who made the mission that set me up to failure. 😆

 

My understanding is also that if you designate a point with the AG RDR, it will apply the elevation of the sequence point in PB17 of the radar.  If it's far off from the designation point, it could have a different enough altitude to be a problem.

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Posted
15 hours ago, Deano87 said:

There's no guarantee that the INS in each bomb and the aircraft would drift in the same direction by the same amount so I doubt that would be the case.

Surely the bomb's Coordinates would get synced with plane coordinates while the bomb is attached to the plane?

I could be wrong ofc.

Posted
8 hours ago, Tenkom said:

Surely the bomb's Coordinates would get synced with plane coordinates while the bomb is attached to the plane?

I could be wrong ofc.

My understanding is the INS actually drifts some during the drop, so that tells you how quickly it can drift.  The GPS isn't used for correcting the INS until about 30 seconds after release, and if GPS is unavailable or jammed, it uses INS the entire way.  So that kind of suggests the drift within 30 seconds is within tolerance, but after that it might start to be significant

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