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#1
May 18th 04, 06:15 PM
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He also forgot to mention all the countries using such a system. Oh
yeah. There aren't any. He should demonstrate f22(or any other stealth plane) capabilities aganist silent sentry not aganist 5 or 50 F15s.Or he should have mentioned something about air forces own UCAV based multi static detection system development program. BTW as far as I can remember I used the word "develops" not "uses" in my post. Ground based silent sentry is in use but UCAV based system is still in development. 
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#2
May 18th 04, 08:25 PM
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#3
May 19th 04, 01:57 AM
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On 18 May 2004 16:15:08 GMT, Denyav wrote:
He also forgot to mention all the countries using such a system. Oh yeah. There aren't any. He should demonstrate f22(or any other stealth plane) capabilities aganist silent sentry What is "silent sentry"? -- "It's easier to find people online who openly support the KKK than people who openly support the RIAA" -- comment on Wikipedia (Email: zen19725 at zen dot co dot uk)
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#4
May 19th 04, 02:20 AM
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On Wed, 19 May 2004 00:57:56 +0100, phil hunt wrote:
What is "silent sentry"? From http://www.dtic.mil/ndia/jaws/sentry.pdf The heart of Silent Sentry is its innovative Passive Coherent Location (PCL) technology developed by Lockheed Martin Mission Systems, which uses everyday broadcast signals, such as those for television and radio, to illuminate, detect and track objects. A passive detection system for U.S. government civil agency and military purposes, Silent Sentry transmits no radio frequency (RF) energy as conventional radar does and has no RF "signature" to alert enemy threats. Instead, it can use the energy that already exists in airspace for detection purposes, and does not adversely affect or harm the environment. -- -Jeff B. yeff at erols dot com
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#5
May 19th 04, 07:23 AM
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On Tue, 18 May 2004 20:20:21 -0400, Yeff wrote:
On Wed, 19 May 2004 00:57:56 +0100, phil hunt wrote: What is "silent sentry"? From http://www.dtic.mil/ndia/jaws/sentry.pdf The heart of Silent Sentry is its innovative Passive Coherent Location (PCL) technology developed by Lockheed Martin Mission Systems, which uses everyday broadcast signals, such as those for television and radio, to illuminate, detect and track objects. Just like the celldar system from Roke Manor then... cheers A passive detection system for U.S. government civil agency and military purposes, Silent Sentry transmits no radio frequency (RF) energy as conventional radar does and has no RF "signature" to alert enemy threats. Instead, it can use the energy that already exists in airspace for detection purposes, and does not adversely affect or harm the environment.
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#6
May 19th 04, 06:13 PM
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Just like the celldar system from Roke Manor ...
Which is a subsidiary of German electronics giant Siemens.
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#7
May 19th 04, 06:21 PM
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The heart of Silent Sentry is its innovative Passive Coherent Location
(PCL) technology developed by Lockheed Martin Mission Systems, which uses everyday broadcast signals, such as those for television and radio, to illuminate, detect and track objects. BTW (West) Germans were first to devolop a multi static detection and tracking system in 70s .Even before Firefly!.
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#8
May 19th 04, 06:27 PM
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Just like the celldar system from Roke Manor then...
Roke Manor (Siemens) system is optimized aganist stealth aircreaft at medium altitudes,whereas Silent Sentry is also very effective aganist next generation stealthy cruise missiles that employ terrain masking in addition to stealth.
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#9
May 19th 04, 08:44 PM
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John Cook wrote:
Just like the celldar system from Roke Manor then... Looking for a hole in the air that's quieter than it should be, right ?
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