Data analysis of GPS jammer
A 1-kilowatt jammer can block a military GPS receiver from as far away as 80 kilometers (50 miles). A Russian company recently marketed a 4-[kilo]watt jammer that can deny a standard GPS signal within up to 200 kilometers (125 miles)Now that jammers are cheap and potentially ubiquitous, how do Tomahawk missiles stay on course?
MALD is a state-of-the-art, low-cost expendable flight vehicle that is modular, air-launched and programmable. It weighs fewer than 300 pounds and has a range of approximately 500 nautical miles. MALD-J adds radar-jamming capability to the basic MALD platform.
Experts are starting to delve into how well the Global Positioning System (GPS) satellite navigation network resists the effects of electronic gsm jammer -- intentional or accidental. The emerging answer is not very well.
Countries attach great importance to the development of GPS signal jammer
Usually, that means Pyongyang using its GPS jammers to try and throw a wrench in the exercise. Now, South Korea's military says the North's electronic interference has done more than just bug folks trying to get satellite-guided directions to their favorite bibimbap spot. North Korea's jamming pushed an American military aircraft out of the skies.
"If the report is accurate, the [North Koreans] may have acquired a more powerful GPS high power jammer, capable of affecting navigation systems over a wider area, (potentially) impacting a host of activities, from intelligence collection to precision weapons applications," one former U.S. Air Force intelligence officer notes.
The news of the spy plane's GPS troubles comes on the heels of rumors that North Korea is working on a new (or souping up an old) jammer. South Korean officials have claimed that Kim's jammers had a range of between 50-100 kilometers. But a South Korean Defense Ministry report on Tuesday indicated that the North is at work on a jammer with a range of more than 100 km.
The second was a spinoff of the Russian system manufactured domestically in North Korea, which is believed to have similar capabilities but costs less on the open market. South Korean intelligence has claimed that in early 2010, North Korea purchased a new 24-Watt jammer from Russia – capable of jamming GPS reception within a 400 kilometer radius, which basically covers the entire Korean Peninsula.
The event did not go unnoticed in Israel, which has for years feared but simultaneously prepared for the possibility that—in a future conflict with Hezbollah in Lebanon, Hamas in the Gaza Strip, Syria or Iran—its GPS-guided weapons will fail. The IDF has taken into consideration the possibility that North Korea has sold its GPS jamming system to countries in the Middle East including Lebanon, Syria, and Iran.
GPS jamming capabilities have been a taboo subject within the Israeli defense establishment and IDF for years, with officers dissuaded from even discussing the potential vulnerability. But as the possibility of a new conflict looms on the horizon, there is no ignoring the likelihood of Israeli bombs being rendered satellite-less in a future
Logan Scott, president of a company with GPS expertise called LS Consulting, said in a May webinar run by Inside GNSS that a GPS jammer with one-tenth of a watt of transmit power has a range of 9.4 miles, a one watt jammer, 29.8 miles, and a fen watt jammer, 94.2 miles. Inside GNSS is a magazine on GPS and other satellite navigation systems operated by China, the European Union and Russia, collectively called Global Navigation Satellite Systems.
DHS and the Defense Department have worked to develop a jammer location system that picks up and feeds jammer signals to a master station run by the National Geo-Spatial Intelligence Agency since 2010, but to date the only feeds it receives are from sensors located at Newark Liberty International Airport in New Jersey, Merrill told the conference.