Design & Test

Signal Decoding with Conventional Receiver and Antenna

February 1, 2013By
Figure 7  Signal-to-noise-density ratio of E1 (red), E5a (magenta), E5b (blue), and E6 (green) code tracking of Galileo IOV satellite PRN 11 on December 21–22, 2012.

A method of decoding an unknown pseudorandom noise code uses a conventional GNSS antenna and receiver with modified firmware. The method was verified using the signals from the Galileo In-Orbit Validation satellites. read more

Innovation: Getting Control

February 1, 2013By
I-opener2

Off-the-Shelf Antennas for Controlled-Reception-Pattern Antenna Arrays
The antenna is a critical component of any GNSS receiving equipment. It must be carefully designed for the frequencies and structures of the signals to be acquired and tracked. Important antenna properties include polarization, frequency coverage, phase-center stability, multipath suppression, the antenna’s impact on receiver sensitivity, reception or gain pattern, and interference handling. While all of these affect an antenna’s performance, let’s just look at the last two here. read more

This article is tagged with , and posted in Design & Test, From the Magazine, Innovation

Call for Participation: Round 2 of NGS Kinematic GPS Challenge

January 30, 2013By

NOAA’s National Geodetic Survey (NGS) is conducting a 12-year project, called Gravity for the Redefinition of the American Vertical Datum (GRAV-D), to redefine the vertical datum of the United States by flying airborne gravity missions. The accuracy of the resulting vertical datum depends directly on the quality of the aircraft’s GNSS position solutions. In August 2010, NGS issued a Kinematic... read more

Galileo’s Search and Rescue System Passes First Space Test

January 23, 2013By
First_Galileo_search_and_rescue_signal_node_full_image

The first switch-on of a Galileo search and rescue package shows it to be working well, according to the European Space Agency. Its activation begins a major expansion of the space-based Cospas–Sarsat network, which brings help to air and sea vessels in distress. The second pair of Europe’s Galileo navigation satellites — launched together on October 12 last year —... read more

u-blox Demonstrates Navigation Using BeiDou

January 18, 2013By

Swiss-based u‑blox, a provider of GPS/GNSS and wireless semiconductors, has achieved successful satellite positioning using China’s BeiDou Navigation Satellite System. According to u-blox, the technical achievement establishes u-blox as the first GNSS component vendor to demonstrate compatibility with all globally deployed positioning systems: GPS, GLONASS, Galileo, QZSS and now BeiDou. However, NovAtel has also announced support for the BeiDou Navigation... read more

This article is tagged with , , , and posted in Design & Test, Latest News

NovAtel GNSS Receivers Provide BeiDou Support

January 16, 2013By

NovAtel announces support for the BeiDou Navigation Satellite System on its OEM6 family and select OEMStar GNSS receivers. The long-anticipated BeiDou Navigation Satellite System (BDS) Interface Control Document (ICD) release is a significant milestone that facilitates global acceptance of BeiDou into the growing range of satellite-based positioning applications, NovAtel said. NovAtel has a long-standing partnership with several Chinese GNSS system... read more

This article is tagged with , , , and posted in Design & Test, Latest News

Spirent Announces Support for BeiDou-2 Testing

January 10, 2013By

Test solutions company Spirent Communications plc today announced the availability of test systems with support for China’s BeiDou Navigation Satellite System in addition to GPS, GLONASS and Galileo. Spirent started shipping BeiDou-ready test systems to customers in 2012. The solution will now be upgraded to full-BeiDou capability using the information from the recently released first full issue of the BeiDou-2... read more

This article is tagged with , , , and posted in Design & Test, Latest News

Septentrio Demonstrates BeiDou+GPS+GLONASS Positioning

January 9, 2013By
Septentrio_Op

Septentrio announced on January 7 that it has successfully implemented BeiDou support in the company’s high-precision receiver software, taking advantage of the recent official release of BeiDou’s Interface Control Document (ICD) to including the Chinese satellite navigation signals into its position-velocity-time (PVT) solution. According to the Belgian GNSS receiver manufacturer, its engineers “are currently processing further data sets to finalize... read more