Global Navigation Satellite Systems Engineering, Policy, and Design
IEC’s TruTrak Evolution GPS ReceiverAlliant Techsystems Inc. (ATK) has announced its successful demonstration of the capability to divert a 105-millimeter (105mm) artillery round using its existing 155mm Precision Guidance Kit (PGK) with minimal modification to the current design.
By Glen Gibbons
The Boeing Company will use its new “pulse line” process for assembling satellites to build GPS Block IIF satellites for the U.S. Air Force.
Constructed at the company’s facility in El Segundo, California, the new process is expected to shorten the time needed to build a space vehicle and will eventually be implemented on all Boeing satellite production lines.
For the Block IIFs the new process will reduce the travel distance of a space vehicle from 12,000 feet to 10,000 feet, according to John Duddy, director of GPS programs for Boeing.
By Glen Gibbons
Neo FreeRunner (GPS chip, lower left, #3)Okay, they’re really serious about open source.
Mobile device manufacturer Openmoko has announced that it will publish the schematics for the company’s Neo 1973 and Neo FreeRunner mobile phones, further opening its mobile platform to the development community.
u-blox AG, Switzerland, maker of the GPS chip — the u- ANTARIS 4 ATR0635 — used in the Neo FreeRunner, endorsed Openmokos publishing the complete schematics for the GPS chip in the Neo FreeRunner phones.
By Glen Gibbons
Standard deviation of code multipath for Galileo signals transmitted by GIOVE-B. The two thicker lines show the L1BC modulations: BOC(1,1), light green, and CBOC (dark green).Initial results from observations of the Galileo GIOVE-B satellite conducted by researchers at the European Space Agency (ESA) and Septentrio Satellite Navigation indicate that the multiplex binary offset carrier (MBOC) modulation outperforms the BOC(1,1) modulation on the L1 (data + pilot channels) frequency in mitigating the effects of multipath or reflected signals.
By Glen Gibbons
UPDATED OCTOBER 19 2008: Organizers of the third meeting of the International Committee on GNSS (ICG) scheduled for December 8–12 in Pasadena, California, are actively seeking the participation of industry and interested members of the GNSS community.
By Glen Gibbons
UPDATED SEPTEMBER 10 2008: With replacement parts currently being manufactured for faulty components that have delayed launch plans, Air Force GPS program managers hope to get the final two modernized Block IIR satellites on orbit by the end of the year.
A tentative launch date of November 7 has been targeted for the Block IIR-20(M), which will carry a payload that includes an experimental L5 signal. If all goes well, the final IIR launch would take place by December 31.
By Glen Gibbons
ST-NXP Wireless, a new company bringing together key wireless operations of STMicroelectronics and NXP, will begin operations August 2 following completion of a deal announced earlier this year.
Owning thousands of communication and multimedia patents, the new joint venture will bring key technologies for UMTS (Universal Mobile Telecommunication System) and for the emerging TD-SCDMA standard, as well as other cellular, multimedia and connectivity capabilities — including WiFi, Bluetooth, GPS, FM radio, USB, and UWB (ultra-wideband).
By Glen Gibbons
Iridium Satellite LLC graphicThe Boeing Company has received a three-year, $153.5-million cost-plus-fixed-fee contract to continue its efforts to augment GPS for military applications by exploiting the Iridium low earth orbit (LEO) communications satellite system.
By Glen Gibbons
The U.S. Air Force Research Lab (AFRL) Munitions Directorate will sponsor a workshop on advances in guidance, navigation, and control (GNC) for miniature autonomous systems, October 20–22 in Fort Walton Beach, Florida.
With the assistance of the Institute of Navigation (ION), the workshop is designed to bring together the Department of Defense technical and user community, academia, and industry to riview and discuss the technological trajectory and future challenges of these systems.
By Glen Gibbons
LV100 Compass
Hemisphere GPS recently introduced two new products: the LV100 GPS Compass Board, an OEM format based on the company’s Crescent Vector technology, and the Air IntelliFlow Dual Rate controller for aerial applications.
Applanix DSS 439 SystemApplanix has launched a dual-camera version of its Digital Sensor System (DSS) 439 RapidOrtho airborne mapping solution and introduced full LIDAR integration options for fixed wing and helicopter installations.
The DSS 439 RapidOrtho DualCam produces a directly georeferenced, four-band ortho-imagery in a single pass, according to the company. The new product offering adds a second DSS camera with a monochromatic charge-coupled device (CCD) array specifically configured to capture near infrared (NIR) imagery.
By Glen Gibbons
GIOVE-A/B Double Difference Ambiguity Measurements, TU DelftResearchers at Delft University of Technology (TU Delft), the Netherlands, succeeded this week in simultaneously tracking the GIOVE-A and GIOVE-B L1 Open Service signals in space, producing the first reported computation of a double-difference carrier phase integer ambiguity resolution on the first two experimental Galileo satellites in orbit.
By Glen Gibbons
Giuseppe Viriglio, ESA’s Director of Telecommunication and Navigation. ESA photo, A. Le Floc’hToday (July 1), the European Commission (EC) — with the support of the European Space Agency (ESA) — launched the procurement process for Galileo with an invitation to companies to submit requests for participation as prime contractors for six work packages (WPs) valued at €2.145 billion (US$3.39 billion).
By Glen Gibbons
