Silicon Investor (SI) -- The First Internet Community

STOCKTALK

We've detected that you're using an ad content blocking browser plug-in or feature. Ads provide a critical source of revenue to the continued operation of Silicon Investor. We ask that you disable ad blocking while on Silicon Investor in the best interests of our community. If you are not using an ad blocker but are still receiving this message, make sure your browser's tracking protection is set to the 'standard' level.

Technology Stocks : LAST MILE TECHNOLOGIES - Let's Discuss Them Here -- Ignore unavailable to you. Want to Upgrade?

To: elmatador who wrote (10497)	2/19/2001 5:34:45 PM
From: Carolyn	Read Replies (1) \| Respond to of 12823

If I am being OT here, I apologize and hope someone can direct me to the appropriate thread. I came across this post on the MRCY RB thread. The poster was musing about 3G: "RESOURCES Based on my understanding of the proposed capability, there seems to be alot of engineering overlap of Mercury's experience with radar, particularly Joint Stars. With Joint Stars, which uses Mercury-based computers to take radar imagery of ground targets, the problem is how does the radar receiver differentiate,isolate, and maintain continuity among radar signals being pinged back to aircraft and isolate those that come a tank from those coming from trees and houses, etc.. The plane, itself, is moving at 4-500mph and the targets are either moving or stationary. The apparent way is for near-real time processing based on the direction from which the ping is echoed and the timing when the pings return. This is referred to Space Time Adaptive Processing (STAP) and the algorithms to do this were being done on super computers a few years ago. With 3g wireless, the problem is analagous I think. How does the receiver at a wireless basestation distinguish and maintain continuity on different transmitted radio signals when the signals are moving or may come from the same azimuth/direction? The same type of processing must be appropriate and is referred to as S(pace)DMA or T(ime)DMA, and is discussed as an adjunct to CDMA. If Mercury engineers participated in the development of STAP for the military, it would seem they have the engineering fundamentals required for SDMA and TDMA IMO." http://rahttp://ragingbull.lycos.com/mboard/boards.cgi?board=MRCY&read=1449gingbull.lycos.com/mboard/boards.cgi?board=MRCY&read=1449 Do any of you have any knowledge of "Space Time Adaptive Processing"?