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Warfare of the future - GPS Jamming
https://rntfnd.org/2020/04/27/norway-powerless-against-gps-interference-nrk/ This issue is not confined to northern Norway. There is a stretch of the East River in New York Harbor near UN Headquarters where there have been many well documented instances of GPS jamming. We've experienced it ourselves. Apparently jammers are easy to buy: https://gizmodo.com/jamming-gps-signals-is-illegal-dangerous-cheap-and-e-1796778955 It looks like we're going to need some new form of electronic navigation some time in the future, something more difficult to jam. -- This email has been checked for viruses by AVG. https://www.avg.com |
Warfare of the future - GPS Jamming
wrote:
https://rntfnd.org/2020/04/27/norway-powerless-against-gps-interference-nrk/ This issue is not confined to northern Norway. There is a stretch of the East River in New York Harbor near UN Headquarters where there have been many well documented instances of GPS jamming. We've experienced it ourselves. Apparently jammers are easy to buy: https://gizmodo.com/jamming-gps-signals-is-illegal-dangerous-cheap-and-e-1796778955 It looks like we're going to need some new form of electronic navigation some time in the future, something more difficult to jam. The power output of GPS stats is very low. So easy to jam, spoof is harder, but easy to override a very low power signal. Sats transmit at less than 50 watts. Even with a decent gain antenna, the receivers get a very low power signal. How many square miles does that 50 watts cover? |
Warfare of the future - GPS Jamming
On 5/5/2020 3:19 PM, Bill wrote:
wrote: https://rntfnd.org/2020/04/27/norway-powerless-against-gps-interference-nrk/ This issue is not confined to northern Norway. There is a stretch of the East River in New York Harbor near UN Headquarters where there have been many well documented instances of GPS jamming. We've experienced it ourselves. Apparently jammers are easy to buy: https://gizmodo.com/jamming-gps-signals-is-illegal-dangerous-cheap-and-e-1796778955 It looks like we're going to need some new form of electronic navigation some time in the future, something more difficult to jam. The power output of GPS stats is very low. So easy to jam, spoof is harder, but easy to override a very low power signal. Sats transmit at less than 50 watts. Even with a decent gain antenna, the receivers get a very low power signal. How many square miles does that 50 watts cover? Fortunately for military purposes our navigation systems are not 100% reliant on GPS. Inertial Navigation Systems (INS) are highly accurate (in some cases *more* accurate than GPS alone) and when hardened can be used without benefit of GPS updates. In normal applications both INS and GPS are used together but if GPS was disabled due to jamming, the INS system can operate solo. This company announced a miniature, low cost INS system in 2017 that has applications in commercial and consumer items like drones. The future may see GPS going the way of LPs and CDs as newer technology takes it place. INS isn't new ... it's been used in the military and commercial airplanes for years ... but as the cost comes down it could take the place of GPS even in our private vehicles. https://insideunmannedsystems.com/worlds-smallest-better-gps-inertial-navigation-system-now-available/ -- This email has been checked for viruses by AVG. https://www.avg.com |
Warfare of the future - GPS Jamming
On Tue, 5 May 2020 17:09:31 -0400, "Mr. Luddite" wrote:
On 5/5/2020 3:19 PM, Bill wrote: wrote: https://rntfnd.org/2020/04/27/norway-powerless-against-gps-interference-nrk/ This issue is not confined to northern Norway. There is a stretch of the East River in New York Harbor near UN Headquarters where there have been many well documented instances of GPS jamming. We've experienced it ourselves. Apparently jammers are easy to buy: https://gizmodo.com/jamming-gps-signals-is-illegal-dangerous-cheap-and-e-1796778955 It looks like we're going to need some new form of electronic navigation some time in the future, something more difficult to jam. The power output of GPS stats is very low. So easy to jam, spoof is harder, but easy to override a very low power signal. Sats transmit at less than 50 watts. Even with a decent gain antenna, the receivers get a very low power signal. How many square miles does that 50 watts cover? Fortunately for military purposes our navigation systems are not 100% reliant on GPS. Inertial Navigation Systems (INS) are highly accurate (in some cases *more* accurate than GPS alone) and when hardened can be used without benefit of GPS updates. In normal applications both INS and GPS are used together but if GPS was disabled due to jamming, the INS system can operate solo. This company announced a miniature, low cost INS system in 2017 that has applications in commercial and consumer items like drones. The future may see GPS going the way of LPs and CDs as newer technology takes it place. INS isn't new ... it's been used in the military and commercial airplanes for years ... but as the cost comes down it could take the place of GPS even in our private vehicles. https://insideunmannedsystems.com/worlds-smallest-better-gps-inertial-navigation-system-now-available/ I hope I don't have to buy a new Garmin! -- Freedom Isn't Free! |
Warfare of the future - GPS Jamming
Mr. Luddite wrote:
On 5/5/2020 3:19 PM, Bill wrote: wrote: https://rntfnd.org/2020/04/27/norway-powerless-against-gps-interference-nrk/ This issue is not confined to northern Norway. There is a stretch of the East River in New York Harbor near UN Headquarters where there have been many well documented instances of GPS jamming. We've experienced it ourselves. Apparently jammers are easy to buy: https://gizmodo.com/jamming-gps-signals-is-illegal-dangerous-cheap-and-e-1796778955 It looks like we're going to need some new form of electronic navigation some time in the future, something more difficult to jam. The power output of GPS stats is very low. So easy to jam, spoof is harder, but easy to override a very low power signal. Sats transmit at less than 50 watts. Even with a decent gain antenna, the receivers get a very low power signal. How many square miles does that 50 watts cover? Fortunately for military purposes our navigation systems are not 100% reliant on GPS. Inertial Navigation Systems (INS) are highly accurate (in some cases *more* accurate than GPS alone) and when hardened can be used without benefit of GPS updates. In normal applications both INS and GPS are used together but if GPS was disabled due to jamming, the INS system can operate solo. This company announced a miniature, low cost INS system in 2017 that has applications in commercial and consumer items like drones. The future may see GPS going the way of LPs and CDs as newer technology takes it place. INS isn't new ... it's been used in the military and commercial airplanes for years ... but as the cost comes down it could take the place of GPS even in our private vehicles. https://insideunmannedsystems.com/worlds-smallest-better-gps-inertial-navigation-system-now-available/ They had INS in the A6 in Vietnam. Crappy ring gyro was it’s biggest problem from what I read. With modern semiconductor technology, a lot easier to get a stable system. Was lots of very cool navigation aids in years past. My favorite was TACAN. Ground Nav Aids was my original school and AFSC in the Air Force. |
Warfare of the future - GPS Jamming
On Tue, 5 May 2020 17:09:31 -0400, "Mr. Luddite"
wrote: On 5/5/2020 3:19 PM, Bill wrote: wrote: https://rntfnd.org/2020/04/27/norway-powerless-against-gps-interference-nrk/ This issue is not confined to northern Norway. There is a stretch of the East River in New York Harbor near UN Headquarters where there have been many well documented instances of GPS jamming. We've experienced it ourselves. Apparently jammers are easy to buy: https://gizmodo.com/jamming-gps-signals-is-illegal-dangerous-cheap-and-e-1796778955 It looks like we're going to need some new form of electronic navigation some time in the future, something more difficult to jam. The power output of GPS stats is very low. So easy to jam, spoof is harder, but easy to override a very low power signal. Sats transmit at less than 50 watts. Even with a decent gain antenna, the receivers get a very low power signal. How many square miles does that 50 watts cover? Fortunately for military purposes our navigation systems are not 100% reliant on GPS. Inertial Navigation Systems (INS) are highly accurate (in some cases *more* accurate than GPS alone) and when hardened can be used without benefit of GPS updates. In normal applications both INS and GPS are used together but if GPS was disabled due to jamming, the INS system can operate solo. This company announced a miniature, low cost INS system in 2017 that has applications in commercial and consumer items like drones. The future may see GPS going the way of LPs and CDs as newer technology takes it place. INS isn't new ... it's been used in the military and commercial airplanes for years ... but as the cost comes down it could take the place of GPS even in our private vehicles. https://insideunmannedsystems.com/worlds-smallest-better-gps-inertial-navigation-system-now-available/ === A combination of GPS and INS constantly checking each other would be close to ideal. Other than cost and size, the biggest historical problem with INS is the tendency of position accuracy to drift as errors accumulate over time. You'd need some artificial intelligence in the loop to arbitrate the inevitable position disagreements and determine when to reset the INS starting point. -- This email has been checked for viruses by AVG. https://www.avg.com |
Warfare of the future - GPS Jamming
On 5/5/2020 5:36 PM, Bill wrote:
Mr. Luddite wrote: On 5/5/2020 3:19 PM, Bill wrote: wrote: https://rntfnd.org/2020/04/27/norway-powerless-against-gps-interference-nrk/ This issue is not confined to northern Norway. There is a stretch of the East River in New York Harbor near UN Headquarters where there have been many well documented instances of GPS jamming. We've experienced it ourselves. Apparently jammers are easy to buy: https://gizmodo.com/jamming-gps-signals-is-illegal-dangerous-cheap-and-e-1796778955 It looks like we're going to need some new form of electronic navigation some time in the future, something more difficult to jam. The power output of GPS stats is very low. So easy to jam, spoof is harder, but easy to override a very low power signal. Sats transmit at less than 50 watts. Even with a decent gain antenna, the receivers get a very low power signal. How many square miles does that 50 watts cover? Fortunately for military purposes our navigation systems are not 100% reliant on GPS. Inertial Navigation Systems (INS) are highly accurate (in some cases *more* accurate than GPS alone) and when hardened can be used without benefit of GPS updates. In normal applications both INS and GPS are used together but if GPS was disabled due to jamming, the INS system can operate solo. This company announced a miniature, low cost INS system in 2017 that has applications in commercial and consumer items like drones. The future may see GPS going the way of LPs and CDs as newer technology takes it place. INS isn't new ... it's been used in the military and commercial airplanes for years ... but as the cost comes down it could take the place of GPS even in our private vehicles. https://insideunmannedsystems.com/worlds-smallest-better-gps-inertial-navigation-system-now-available/ They had INS in the A6 in Vietnam. Crappy ring gyro was it’s biggest problem from what I read. With modern semiconductor technology, a lot easier to get a stable system. Was lots of very cool navigation aids in years past. My favorite was TACAN. Ground Nav Aids was my original school and AFSC in the Air Force. For the technically inclined (but bored) ... here's an excellent history of the developments of inertial systems (primarily for aircraft) starting with mechanical gyros, the introduction of RLGs and eventually fiber optic systems. http://www.strapdownassociates.com/Blazing%20Gyros%20For%20The%20Web.pdf I got a kick out of it because one of my jobs back in the 80's was traveling around the country meeting with many of the players (Honeywell, Northrup, Singer-Kearfott, etc.) gathering info for a "white paper" report to aid in a decision for the company I was working for to set up a lab producing the super-polished optics and vacuum, thin film deposition systems for the production of RLGs. I remember being called "on the carpet" by the brass at the company because my report concluded with a recommendation that they *do not* invest in the labs and equipment because the expensive to produce RLGs would soon be replaced with less expensive fiberoptic wound devices that still performed well enough in INS systems. -- This email has been checked for viruses by AVG. https://www.avg.com |
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