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"Harry Andreas" wrote in message ... In article , "Tarver Engineering" wrote: "Harry Andreas" wrote in message ... 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. So far the GPS/Data link combination has performed at less than expected levels. I havn't seen anything good about the Navy plan to replace TACAN with GPS/Data link and FAA just killed the LAAS landing system. The JSF GPS receiver is significantly better than anything else on the market. We'll be delivering the first EMD in September. Google JPALS. http://www.ainonline.com/issues/06_0...electsp94.html As you can see by reading the URL, other differential GPS systems have happy press releases, while often producing less than adaquate results. For military style systems, the binary satellite provides 0.2 meter accuracy without augmentation in the longitudinal reference frame. Altitude may altentaively be resolved using the TWAS data base and thereby eliminates the error WGS-84 error documented in RTCA DO-208 change 3. UPSAT has demonstrated same with the CNX-80 using civil codes, optional improvement for WAAS augmentation shows only a small advantage. (VNAV) |
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