Low Power Satellite Based Laser / Imaging System Could Easily Track Activity Disturbing Cheap Reflecting Fibers
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From: Bret Cahill on 27 Jan 2010 12:52 Shine a 4 milliwatt 645 nm wavelength dollar store pet laser onto a red reflector lens at night and it explodes into color. Slender reflective fibers would easily reflect a relatively low power satellite based laser a couple hundred miles back to the satellite and show up on satellite imaging. A very weak magnet on each fiber could orient the fibers in specified directions with respect to the earth's magnitic field it the time it would take to fall hundreds or thousands of feet from a plane. It would be very difficult to tramp over the fibers without disturbing the orientation. When Al Quada tries a night time ambush, everyone on the planet knows about it. > > The mililary needs some material that can be crop dusted onto road > > beds that can only be disturbed by digging and not by vehicle traffic. > Ordinary traffic performs a certain amount of "gardening" on a dirt > road, meaning some of thetaggant_will_ be mixed into the roadbed > material. How deeply depends on the exact nature of the material (sand/ > clay/organic dirt, salts, concrete, asphalt, etc.) the kind and degree > of traffic, the weather _and_ climate, and so on. > > Worst case you get washboarding which requires periodic repair, > meaning deeper penetration by thetaggant. It will however be more > evenly distributed than the sort of localized dugskullery you're > talking about. > > Hence the sort of disturbance due to traffic will be easily > differentiable from that due to digging. > > > The material must be deposited with a characteristic "thumbprint" that > > can be identified with the appropriate sensors but cannot be > > duplicated, i.e., it cannot be swept up and spread over a freshly > > planted bomb. > > > This method wouldn't reveal the old bombs but it would make it easy to > > spot where a roadbed was recently dug up. > > Just off the top of my head, how about microscopic polymer chips > like those used in dynamite. Rather than the complex layering used to > indicate batch numbers etc. it would be infused infused with an > additive which, when exposed to UV, fluoresces in the IR, not the > visible. If laid down by ground vehicle or say Predator or other drone > during low traffic periods it would have a fairly even characteristic > distribution, and any disturbance will be immediately visible by > inspection by personnel wearing IR goggles during the day, and at > night with IR goggles and the assistance of a UV lamp. Inspection > could also be done by suitably-equipped drones of course. > > Attempts to "sweep up" and use the dust to cover new bombs will not > replicate the dust distribution as laid down originally. > > Mark L. Fergerson
From: J. Clarke on 27 Jan 2010 13:45 Bret Cahill wrote: > Shine a 4 milliwatt 645 nm wavelength dollar store pet laser onto a > red reflector lens at night and it explodes into color. > > Slender reflective fibers would easily reflect a relatively low power > satellite based laser a couple hundred miles back to the satellite and > show up on satellite imaging. A very weak magnet on each fiber could > orient the fibers in specified directions with respect to the earth's > magnitic field it the time it would take to fall hundreds or thousands > of feet from a plane. > > It would be very difficult to tramp over the fibers without disturbing > the orientation. > > When Al Quada tries a night time ambush, everyone on the planet knows > about it. This is the kind of hare-brained scheme that some Beltway Bandit would come up with. Fine, you can detect "tramping". So how do you tell that it was the bad guys and not some kid herding his Daddy's goats? As for distinguishing digging from traffic, fine, let's say you can do that. So they pay a bunch of kids to bury thousands of coffee cans all over the place and you can't tell where the real bomb is until you go dig them all up by which time it's already gone off. >>> The mililary needs some material that can be crop dusted onto road >>> beds that can only be disturbed by digging and not by vehicle >>> traffic. > >> Ordinary traffic performs a certain amount of "gardening" on a dirt >> road, meaning some of thetaggant_will_ be mixed into the roadbed >> material. How deeply depends on the exact nature of the material >> (sand/ clay/organic dirt, salts, concrete, asphalt, etc.) the kind >> and degree of traffic, the weather _and_ climate, and so on. >> >> Worst case you get washboarding which requires periodic repair, >> meaning deeper penetration by thetaggant. It will however be more >> evenly distributed than the sort of localized dugskullery you're >> talking about. >> >> Hence the sort of disturbance due to traffic will be easily >> differentiable from that due to digging. >> >>> The material must be deposited with a characteristic "thumbprint" >>> that can be identified with the appropriate sensors but cannot be >>> duplicated, i.e., it cannot be swept up and spread over a freshly >>> planted bomb. >> >>> This method wouldn't reveal the old bombs but it would make it easy >>> to spot where a roadbed was recently dug up. >> >> Just off the top of my head, how about microscopic polymer chips >> like those used in dynamite. Rather than the complex layering used to >> indicate batch numbers etc. it would be infused infused with an >> additive which, when exposed to UV, fluoresces in the IR, not the >> visible. If laid down by ground vehicle or say Predator or other >> drone during low traffic periods it would have a fairly even >> characteristic distribution, and any disturbance will be immediately >> visible by inspection by personnel wearing IR goggles during the >> day, and at night with IR goggles and the assistance of a UV lamp. >> Inspection could also be done by suitably-equipped drones of course. >> >> Attempts to "sweep up" and use the dust to cover new bombs will not >> replicate the dust distribution as laid down originally. >> >> Mark L. Fergerson
From: Bret Cahill on 27 Jan 2010 22:37 > > Shine a 4 milliwatt 645 nm wavelength dollar store pet laser onto a > > red reflector lens at night and it explodes into color. > > > Slender reflective fibers would easily reflect a relatively low power > > satellite based laser a couple hundred miles back to the satellite and > > show up on satellite imaging. A very weak magnet on each fiber could > > orient the fibers in specified directions with respect to the earth's > > magnitic field it the time it would take to fall hundreds or thousands > > of feet from a plane. > > > It would be very difficult to tramp over the fibers without disturbing > > the orientation. > > > When Al Quada tries a night time ambush, everyone on the planet knows > > about it. > > This is the kind of hare-brained scheme that some Beltway Bandit would come > up with. Fine, you can detect "tramping". So how do you tell that it was > the bad guys and not some kid herding his Daddy's goats? Send a drone over. The satellite system monitors hundreds of thousand of square miles silently and, with UV or IR lasers, invisibly. > As for > distinguishing digging from traffic, fine, let's say you can do that. So > they pay a bunch of kids to bury thousands of coffee cans all over the place > and you can't tell where the real bomb is until you go dig them all up by > which time it's already gone off. The more you force the enemy to waste time with counter measures the less time and resources they have to deploy real bombs. > >>> The mililary needs some material that can be crop dusted onto road > >>> beds that can only be disturbed by digging and not by vehicle > >>> traffic. > >> Ordinary traffic performs a certain amount of "gardening" on a dirt > >> road, meaning some of thetaggant_will_ be mixed into the roadbed > >> material. How deeply depends on the exact nature of the material > >> (sand/ clay/organic dirt, salts, concrete, asphalt, etc.) the kind > >> and degree of traffic, the weather _and_ climate, and so on. > > >> Worst case you get washboarding which requires periodic repair, > >> meaning deeper penetration by thetaggant. It will however be more > >> evenly distributed than the sort of localized dugskullery you're > >> talking about. > > >> Hence the sort of disturbance due to traffic will be easily > >> differentiable from that due to digging. > > >>> The material must be deposited with a characteristic "thumbprint" > >>> that can be identified with the appropriate sensors but cannot be > >>> duplicated, i.e., it cannot be swept up and spread over a freshly > >>> planted bomb. > > >>> This method wouldn't reveal the old bombs but it would make it easy > >>> to spot where a roadbed was recently dug up. > > >> Just off the top of my head, how about microscopic polymer chips > >> like those used in dynamite. Rather than the complex layering used to > >> indicate batch numbers etc. it would be infused infused with an > >> additive which, when exposed to UV, fluoresces in the IR, not the > >> visible. If laid down by ground vehicle or say Predator or other > >> drone during low traffic periods it would have a fairly even > >> characteristic distribution, and any disturbance will be immediately > >> visible by inspection by personnel wearing IR goggles during the > >> day, and at night with IR goggles and the assistance of a UV lamp. > >> Inspection could also be done by suitably-equipped drones of course. > > >> Attempts to "sweep up" and use the dust to cover new bombs will not > >> replicate the dust distribution as laid down originally. > > >> Mark L. Fergerson- Hide quoted text - > > - Show quoted text -- Hide quoted text - > > - Show quoted text -
From: Bret Cahill on 27 Jan 2010 22:54 > > Shine a 4 milliwatt 645 nm wavelength dollar store pet laser onto a > > red reflector lens at night and it explodes into color. > The molded corner cubes are purposefully defective to spread the > return beam. Clearly a reflector specifically designed for the satellite's laser and sensor will do much better than poppy fields or, for that matter, vehicle lenses. .. . . > > Slender reflective fibers would easily reflect a relatively low power > > satellite based laser a couple hundred miles back to the satellite and > > show up on satellite imaging. > An idiot proposal in so many boring ways. Reflected power varies as > 1/r^4. The sensor only needs a 1 nano second flash from a few fibers. The swath will contain trillions of fibers. > A 500 mile flightpath through turbulent dirty atmosphere, > twice, Visible light might not be the best wavelength for a couple of reasons. > will need adaptive optics to form an image. Maybe $50 for the software . . . Bret Cahill
From: J. Clarke on 28 Jan 2010 01:09
Bret Cahill wrote: >>> Shine a 4 milliwatt 645 nm wavelength dollar store pet laser onto a >>> red reflector lens at night and it explodes into color. >> >>> Slender reflective fibers would easily reflect a relatively low >>> power satellite based laser a couple hundred miles back to the >>> satellite and show up on satellite imaging. A very weak magnet on >>> each fiber could orient the fibers in specified directions with >>> respect to the earth's magnitic field it the time it would take to >>> fall hundreds or thousands of feet from a plane. >> >>> It would be very difficult to tramp over the fibers without >>> disturbing the orientation. >> >>> When Al Quada tries a night time ambush, everyone on the planet >>> knows about it. >> >> This is the kind of hare-brained scheme that some Beltway Bandit >> would come up with. Fine, you can detect "tramping". So how do you >> tell that it was the bad guys and not some kid herding his Daddy's >> goats? > > Send a drone over. And how does "sending a drone over" tell you about events that happened hours earlier? Are you going to "send a drone over" every time a rabbit runs down the road? > The satellite system monitors hundreds of thousand of square miles > silently and, with UV or IR lasers, invisibly. And it finds that, wonder of wonders, there is traffic on roads. The problem is not determing whether there is traffic but determining which specific traffic is planning to cause trouble. >> As for >> distinguishing digging from traffic, fine, let's say you can do >> that. So they pay a bunch of kids to bury thousands of coffee cans >> all over the place and you can't tell where the real bomb is until >> you go dig them all up by which time it's already gone off. > > The more you force the enemy to waste time with counter measures the > less time and resources they have to deploy real bombs. So how much does it cost you to deploy your fancy bullshit and how much does it cost him to defeat it? |