TAG: Javad Ashjaee

J-Shield from JAVAD to Counter Interference

August 21, 2012By

  JAVAD GNSS announces that it has improved its GNSS protection filters, not only to protect the L1 band against all interferences (including LightSquared 10L, 10H and 10R handset), but to protect against all other interferences which may come in any other GNSS band. The company calls its improved filter the J-Shield, and states that it will “help make the... read more

This article is tagged with , , , and posted in OEM, OEM News, Surveying

Letter to the Editor: Automatic Gain Control, Spoofing

July 1, 2012By

Just for the record: what is reported in “Detecting False Signals With Automatic Gain Control” (April GPS World) is what we introduced a long time ago and is reflected in one of our videos, and implemented in all of our GNSS receivers. AGC information is one of the four ways, and the least significant way, that we show interferences. There is a big difference between showing something in the laboratory and in some receivers, compared with having technology in mass production that everyone can understand and use. — Javad Ashjaee read more

This article is tagged with , , , and posted in Opinions, Simulators & Tools

The System: Technical Report on LS/GPS Interference

August 1, 2011By
Delta IV GPS2F-2 Rollback of Mobile Service Tower prior to launc

Once again, developments in the news outpaced print technology’s ability to keep up in the LightSquared saga. Shortly after the July issue went to press on June 27, the TWG final report appeared on June 30. Thus you readers, who received the magazine circa July 15, held old news in your hands. Likely this will occur again. read more

This article is tagged with , and posted in GNSS, System and Business News, The System

To Solve LightSquared Issue, Javad Ashjaee Calls for End to P-Code Encryption

July 15, 2011By

To solve the LightSquared versus GPS controversy, Javad Ashjaee, president and CEO of JAVAD GNSS, has appealed directly to President Obama to discontinue the encryption of P-code, the restricted military GPS signal. His comments came in the context of the LightSquared/GPS interference imbroglio, as part of his solution to the conflict over spectrum. “This policy is not helping national security. It is hurting both precision users and the broadband project. We need more broadband, for global, fast, and inexpensive real-time kinematic (RTK) GPS.” read more

This article is tagged with , , and posted in GNSS, GNSS News, OEM, OEM News

How GPS and GLONASS Got Together — and Other Recent Events

June 1, 2011By
Javad_Opener

The recent broadcast of the first CDMA signal from the new GLONASS-K satellite culminates a long series of events that began in 1989. A key participant gives a first-hand account of the history of many meetings, formal and informal, that created true interoperability between the two major satellite systems, giving users a modern GNSS in action. read more

This article is tagged with , , and posted in GLONASS, GNSS