TAG: Per Enge

2013 Leadership Awards: The Honorees Speak

December 1, 2013By
The GPS World 2013 Leadership Awards.

This article reproduces the acceptance speeches given by the winners of GPS World’s 2013 Leadership Awards, at the Leadership Dinner in Nashville in September. The Leadership Dinner was sponsored by Lockheed Martin and Exelis. Nominations for the 2013 Leadership Awards came from the Editorial Advisory Board of GPS World, from the 2012 Award winners, and from a select handful of... 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 From the Magazine, GNSS, Innovation

Expert Advice: Location by Database

June 1, 2012By
Figure 6. Predicted signal strength for one transmitter in the San Francisco financial district.

Radio-Frequency Pattern Matching By Tarun Bhattacharrya, Hassan El-Sallabi, Jian Zhu, Jeff Wu, and Per Enge Radio-frequency pattern matching (RFPM) is the engine that enables the use of mobile-phone signals to locate wireless devices in any environment, including dense downtown areas and indoors. This exciting technology leverages the power of the database to improve location accuracy to within 50 meters in... read more

Enge Pilots Polaris Wireless/GPS Integration

April 2, 2012By

Polaris Wireless, a provider of software-based wireless location solutions, announced that Per K. Enge of Stanford University has joined its executive team as the chief technical advisor. In an interview with GPS World, Enge describes how combined wireless location signatures and GPS show an exciting way forward for location in dense urban environments, where the wireless solution actually improves as... read more

This article is tagged with , , and posted in Featured Stories, LBS/Wireless, OEM

Innovation: Digging into GPS Integrity

November 1, 2011By
Inn-opener

Charting the Evolution of Signal-in-Space Performance by Data Mining 400,000,000 Navigation Messages
There are four important requirements of any navigation system: accuracy, availability, continuity, and integrity. In this month’s column we take a look at one particular aspect of GPS integrity: that of the signal in space and find out how trustworthy is the satellite ephemeris and clock information in the broadcast navigation message. read more

This article is tagged with , and posted in From the Magazine, GNSS, Innovation, Signal Processing

Integrity for Non-Aviation Users: Moving Away from Specific Risk

July 1, 2011By
Pullen-Open2

Non-aviation users of satellite- and ground-based augmentation systems do not require the conservative level of integrity built into these systems for aviation users. Removing it can produce substantial benefits in terms of smaller error bounds and improved availability. read more

This article is tagged with , , , and posted in Augmentation & Assistance, Aviation, GNSS, Transportation