product design

LightSquared Charges That GPS Receiver Manufacturers "Ignore" DoD Standards

LightSquared Charges That GPS Receiver Manufacturers “Ignore” DoD Standards

LightSquared has opened a new rhetorical front in its battle with the GPS community over the company’s efforts to convert L-band frequencies into terrestrial wireless broadband services: claiming in an August 11 letter to the Federal Communications Commission (FCC) that receiver manufacturers “chose to ignore” Department of Defense (DoD) standards.

In response, the Coalition to Save Our GPS, a group of GPS receiver manufacturers opposed to LightSquared’s plans, called the company’s filing an act of "desperation."

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By Inside GNSS
China Satellite Conference 2011
July 11, 2011

China Satellite Conference 2011

Hotel Nikko New Century in Haidian, Beijing

This officially sanctioned conference and equipment exhibtion addresses applications, technologies and trends for China’s satellite communications, broadcasting, remote sensing, navigation and positioning.It will be held at Hotel Nikko New Century in Beijing on October 26.28, 2011.

Subjects of most interest to Inside GNSS readers include:

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By Inside GNSS
Cars on the Road!
July 2, 2011

Cars on the Road!

FIGURE 1: System architecture

Cooperative vehicle safety applications should preferably have two-meter horizontal accuracy and six-meter vertical accuracy, all with a 95-percent availability. The solution must be developed to incorporate lower-cost sensor options, specifically, lower-cost inertial measurement units that can be generally characterized by the gyro drift of 100 degrees per hour and an accelerometer bias force of twice its mass times gravity (two milligals).

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By Inside GNSS
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July 1, 2011

Verification Testing

A GNSS signal simulator is mainly used to simulate GNSS signals transmitted by navigation satellites, propagated through the Earth’s atmosphere, and received by the receiver antenna. A simulator provides a convenient signal source for the test and validation of receiver function and performance and can also be used in GNSS experiments and studies of signal/data processing algorithms.

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By Inside GNSS
USA Challenge Competition Seeks Satellite Navigation Apps
June 30, 2011

USA Challenge Competition Seeks Satellite Navigation Apps

This is a 1993 photo of Walter, a German astronaut. He exemplifies the fearless approach to experimentation and the spirit of fun that we are looking for (DLR photo)

[Updated June 30] Lucky you – you have three extra days to submit your GNSS application idea to the USA Challenge! The extended deadline is midnight Sunday (Europe) or 3 P.M. (Pacific time) on July 3.

Right now, some team is hard at work in a basement, an office, a dorm room or a lab. They are about to come up with a new, useful and commercially viable idea for a satellite navigation application or location based service.

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By Inside GNSS
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June 24, 2011

Senate Proposals for GPS Receiver Standards Won’t Solve LightSquared Issue

LightSquared’s proposed broadband service may cause trouble for GNSS receivers, such as this one, that use commercial satellite augmentation services.

The Senate is considering establishment of receiver standards as part of a wide-ranging effort to find more frequencies for wireless broadband services, a move that could ultimately result in expensive new requirements for the GPS community.

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By Inside GNSS
IFEN: SX-NSR Receivers Shipping; Final GATE Certification
June 6, 2011

IFEN: SX-NSR Receivers Shipping; Final GATE Certification

IFEN’s SX-NSR Multi-Channel, Multi-GNSS Receiver

IFEN GmbH has begun shipping the first units of its new second-generation, multi-frequency and multi-GNSS software receiver — the SX-NSR.

The Poing, Germany–based company has also announced that the Galileo Test and Development Environment (GATE) facility that it instrumented and operates near Berchtesgaden for the German Space Agency (DLR) has been certified as a Galileo open-air test laboratory conforming to ISO 17025.

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By Inside GNSS
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Qualcomm Adds GLONASS Capability to Chipsets

Qualcomm Adds GLONASS Capability to Chipsets

Qualcomm Incorporated has announced the company’s product support for the Russian GLONASS satellite system to enable the use of both GPS and GLONASS networks simultaneously for improved location performance.

The first GLONASS-capable phone is the MTS 945 from Chinese phone manufacturer ZTE developed with Russian chipset manufacturer AFK Sistema and powered by Qualcomm’s Snapdragon MSM7x30 chipset.

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By Inside GNSS
Septentrio Announces AsteRx-m ‘Ultra-Compact’ GPS/GLONASS RTK Receiver
May 24, 2011

Septentrio Announces AsteRx-m ‘Ultra-Compact’ GPS/GLONASS RTK Receiver

Septentrio has announced plans to release the AsteRx-m, a low-power GPS/GLONASS dual-frequency RTK receiver that is smaller than a credit card.

The new board, which will begin shipping in the third quarter of 2011, is aimed specifically at integration in handheld devices, mobile computing platforms, and other solutions requiring high accuracy combined with low power in applications where space is at a premium. The new receiver covers the functionality range from GPS-L1 only to full GPS-GLONASS L1-L2

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By Inside GNSS
New Senate Subcommittee Addresses Mobile Technologies and Privacy: Apple, Google to Appear
April 28, 2011

New Senate Subcommittee Addresses Mobile Technologies and Privacy: Apple, Google to Appear

Funny thing about the U.S. Constitution: it address the activities of government officials and agencies — including restraints on those activities — but not the activities of commercial business and individuals. The latter are left to federal, state, and local laws.

So, when the government conducts warrantless surveillance using GPS, the issue may come before the U.S. Supreme Court or state and federal judges at other levels. If private companies do it, they may end up at a congressional hearing.

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By Inside GNSS
New Advanced Receiver Course Featured in NavtechGPS July Seminar
April 26, 2011

New Advanced Receiver Course Featured in NavtechGPS July Seminar

The GNSS signal spectrum in neon

NavtechGPS, the Washington D.C.-based GNSS technology trainers, will introduce a new advanced receiver course for engineers and designers in their summer seminar series at the Doubletree Hotel in Annapolis, Maryland next July 11-15.

The course is called "Using Advanced GPS/GNSS Signals and Systems." Signal and receiver design expert John Betz, MITRE Corporation, and James Sennott, president of Tracking and Imaging Systems, Inc will teach it.

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By Inside GNSS
Trimble Announces Plans to Buy Ashtech
April 19, 2011

Trimble Announces Plans to Buy Ashtech

Continuing a series of acquisitions in recent years, Trimble announced today (April 19, 2011) that the Sunnyvale, California–based company has entered into a definitive agreement to acquire privately held Ashtech S.A.S.

In announcing the its plans, Trimble said that it expects the acquisition of the Carquefou, France, company and its affiliates will expand the U.S. company’s Spectra Precision portfolio of survey solutions and allow the company to better address emerging markets worldwide.  

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By Inside GNSS
Hexagon 2011 International Conference
April 7, 2011

Hexagon 2011 International Conference

A number of user conferences for customers of Hexagon AB’s precise measurement brands and products will be combined in the Swedish corporation’s first international conference this summer.

It will take place at Orlando World Center Marriott Resort in Orlando, Florida from June 6 through June 9, 2011.

The theme is "Building a Smarter World," and will include 200 technical and training sessions and an industry exhibition.

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By Inside GNSS
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