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In article , "Paul F Austin"
wrote: "Harry Andreas" wrote Peter Kemp wrote: Basically two off board SAR radars provide updates - IIRC the trials are using a JSTARS and a phased array (I think from the F-35 program, but can't readily recall). More likely either the F/A-18E/F or the F-15C with APG-63(V)2 . I don't think the F-35 radar is in position yet to be able to support tests outside the F-35 program. I read recently that an AMSTE demonstration with a single RADAR sensor was successful. That's a major milestone since the earlier algorithms required fusing two RADAR sensors to get the resolution required. I don't think mono-sensor demo involved a fighter sensor but I don't recall any details. Both JDAM and SDB are planned to allow use of a terminal imager. Because the GPS nav puts the weapon into a small error basket, the terminal seeker can be very inexpensive, given the small field of regard. On the other hand, JDAM accuracy has been consistently better than spec, so the users are less interested in the terminal seeker. Hmmm. I don't know about that. Just as interested seems to me. I'm not sure how AMSTE plays with the terminal seeker. Moving target engagement requires post-release updates and a data link from the launcher to the weapon but everything to date that I've seen talks about aimpoint updates for the GPS/INS. Keep that basket small. If your system has enough bandwidth you can update the weapon all the way to the target and at the terminal point it's within the CEP of the blast effect for the particular weapon you've selected. Obviously the 2000lb JDAM requires less bandwidth for a given target. Also obviously the performance of your SAR, GPS receiver, and datalink are crucial. -- Harry Andreas Engineering raconteur |
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