x****o
发帖数: 21566 | 1 似乎是军方的实验...
The article says it only affects GPS above 50ft AGL, so would assume any
ground based GPS receivers are not going to have any issues. - Reddit user
http://www.avweb.com/avwebflash/news/GPS-Interference-NOTAM-For-Southwest-226365-1.html
A Notam is warning operators of “all aircraft relying on GPS” of
widespread GPS outages starting Tuesday throughout the Southwest and
especially southern California. Although the FAA doesn’t go into detail, it
seems the military is testing something that can disrupt GPS over a huge
area, centered on China Lake, California, home of the Navy’s China Lake
Naval Weapons Center. On Tuesday, June 7, the FAA is warning that GPS
signals down to 50 feet AGL could be “unreliable or unavailable” between 9
:30 a.m. and 3:30 p.m. local time over a radius of 253 nautical miles, which
includes the L.A. Basin, Bay area and Las Vegas. There will be further
outages of similar potential duration June 9, 21,23, 28 and 30. The circles
expand with altitude and at 40,000 feet the interference will affect a
circular area of the Southwest 950 nautical miles across, reaching central
Oregon, Colorado and New Mexico.
The tests will potentially knock out all GPS-reliant services including WAAS
, GBAS and, notably, ADS-B. The FAA also doesn’t want a lot of radio
chatter about the outages and is urging pilots to report them if they need
help from ATC. Operators of Embraer Phenom 300 business jets are being urged
to avoid the area entirely. “Due to GPS Interference impacts potentially
affecting Embraer 300 aircraft flight stability controls, FAA recommends EMB
Phenom pilots avoid the … testing area and closely monitor flight control
systems,” the Notam reads. | m***y
发帖数: 14763 | 2 听起来是地面中继GPS信号，中继的信号跟原始的一模一样，但是比原始的时延大，如
果被灰鸡取用，就会把卫星到地面站的距离再加上地面站到灰鸡的距离，当成灰鸡到卫
星的直线距离。如果地面站再加入中继时延，误差就更大了。 | x****o
发帖数: 21566 | 3 GPS Spoofing似乎就是这样干的
【在 m***y 的大作中提到】
: 听起来是地面中继GPS信号，中继的信号跟原始的一模一样，但是比原始的时延大，如
: 果被灰鸡取用，就会把卫星到地面站的距离再加上地面站到灰鸡的距离，当成灰鸡到卫
: 星的直线距离。如果地面站再加入中继时延，误差就更大了。
| c*********l
发帖数: 1065 | 4 找球康的老中焊个大功率jammer，分分钟废掉何止gps。。。
【在 x****o 的大作中提到】
: GPS Spoofing似乎就是这样干的
| c******n
发帖数: 16666 | 5 之前伊朗偷美国无人机就是靠这个吧
【在 x****o 的大作中提到】
: GPS Spoofing似乎就是这样干的
| h******e
发帖数: 9616 | | s**********d
发帖数: 36899 | 7
有名的海军武器试验基地。
【在 h******e 的大作中提到】
: 老中湖？
| u****q
发帖数: 24345 | 8 FCC分分钟抓住坐大牢
【在 c*********l 的大作中提到】
: 找球康的老中焊个大功率jammer，分分钟废掉何止gps。。。
| m***y
发帖数: 14763 | 9 难，FCC根本不到南加执法，军事基地太多，以致于车上的广播都能啸叫起来。每次那
边的群众到居版来问高压线的辐射，老汉就掩口葫芦而笑，你们要致癌，不缺这点能量。
【在 u****q 的大作中提到】
: FCC分分钟抓住坐大牢
| c*********l
发帖数: 1065 | 10 还好，这要搁国内，也是正能量，不吸也得吸
量。
【在 m***y 的大作中提到】
: 难，FCC根本不到南加执法，军事基地太多，以致于车上的广播都能啸叫起来。每次那
: 边的群众到居版来问高压线的辐射，老汉就掩口葫芦而笑，你们要致癌，不缺这点能量。
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