GPS World, July 2011

ARTICLE EXCERPT What Is GPS Good For As Long As Its Not Interfered With As a resource for policymakers and other interested parties seeking to understand the role and potential of GPS in the U S economy security defense safety infrastructure and overall national interest we present a compilation of stories on real world applications of GPS technology They are grouped by Survey Construction and Mapping Roads Traffic and Freight Natural Resources Offshore Oil Platforms Mining Defense Security and First Responder Disaster Management Aviation Timing Networks and Infrastructure Feel free to forward the link to the full article www gpsworld com good to your senator or representative adding your message about how the LightSquared initiative if allowed to go forward will seriously degrade if not disable many or all of these applications Hottest Pages @ GPSWorld com May 22 June 21 2011 1 John Deere Massive LightSquared Interference with No Solution in Sight 2 Test Data Shows that LightSquared Slams Medium and High Precision GPS Receivers 3 LightSquared Las Vegas Test Towers Flawed FCC Filing Shows GNSS Design Test newsletter 4 LightSquared FCC Rebuttals Distort Record 5 LightSquared Its Worse than You Think Survey Scene newsletter 6 How GPS and GLONASS Got Together and Other Recent Events June GPS World 7 Data Shows Disastrous GPS Jamming from FCC Approved Broadcaster 8 What Is GPS Good For As Long As Its Not Interfered With 9 My 1967 Israeli GPS Eyewitness to History Defense PNT newsletter 10 Product Review Great Positive Strokes from Nike TomTom Watch June GPS World ONLINE RESOURCES NEWSLETTER EXCERPT LightSquared High Precision Receivers Are Collateral Damage From the Survey Scene newsletter June 2011 By Eric Gakstatter Three business days after requesting a two week extension from the FCC LightSquared announced that it has found a solution to the GPS interference problem and issued a statement titled LightSquared Solution to GPS Issue Will Clear Way for Nationwide 4G Network The so called solution is to temporarily abandon the upper frequency it originally planned to roll out 1550 1555 MHz and roll out its service using the lower spectrum I refer to as modified 1526 1536 MHz LightSquared claims that it will thus be largely free of interference issues with the exception of a limited number of high precision GPS receivers that are specifically designed to rely on LightSquareds spectrum LightSquareds CEO said that this solution will accommodate 995 of the GPS receivers Uh oh Guess who the remaining 5 are Yes your highprecision GPS receiver High precision GPS receivers are the most difficult to accommodate and LightSquared thinks that if it tells the FCC and the world that it has taken care of 995 of the GPS receivers in the U S the other 5 can deal with it Read on at www gpsworld com damage JULY WEBINAR The GNSS Market in China Moderator Tony Murfin Contributing Editor Professional OEM July 21 10 a m PT 1 p m ET 6 p m GMT Platinum Sponsor Hemisphere GPS TONY MURFIN What are companies doing to conduct business in China and what hurdles should be expected Experts from NavCom and other companies join Tony Murfin to discuss the latest GNSS market developments in China Register free at gpsworld com webinar Corrections for June Issue Some companies were inadvertently left out of the print version of the 2011 Buyers Guide The corrected complete version is online and can be downloaded at www gpsworld com buyersguide The description in the table of contents for Innovation MBOC Signal Options should have read A candidate for modernized GNSS civil signals in the L1 E1 band was BOC 11 a binary offset carrier signal with a split spectrum that has negligible impact on the existing GPS signals However a signal with better acquisition capabilities and improved multipath performance while still compatible with the existing GPS signals is a multiplexed BOC modulation MBOC 611 11 The MBOC spectrum can be achieved by following one of several different signal construction paths with some resulting differences in how a receiver tracks the signal and its associated performance GPS World July 2011 www gpsworld com 4