White Papers

Continuous Phase Modulation for GPS Codes: Reducing Out-of-band Emissions and Improving RF/DC Efficiency NEW!

Logo: Harris

This article discusses a method of applying known continuous phase modulation (CPM) techniques to the GPS/GNSS navigational system in such a way as to be compatible with legacy equipment, while reaping the benefits of improved spectral and DC efficiency. Attention is given to the unique requirements of a GPS or other navigational system that differentiate it from a communication system. A method is presented that both maintains the spectral efficiency of CPM and remains in compliance with correlation loss and preserving the quality of the correlation function in legacy receivers. This work primarily focuses on the design of a CPM version of the BOC(10,5) signal, but also includes results for the C/A and P code modulation. Hardware testing of the CPM version of the BOC(10,5) signal amplified with flight-like HPAs demonstrates that the anticipated spectral efficiency is achieved while providing improved DC efficiency over the conventional BPSK waveforms.


Honeywell has expanded into commercial / industrial markets and is now shipping two new non-ITAR IMUs suitable for navigation and control purposes. Whether the platform is autonomous or manned, and whether it operates in the land, sky, or sea, the IMUs featured in this white paper are designed to meet the platform needs of a range of industries — including agriculture, automotive, communication, construction, energy, inspection, mapping, marine, mining, robotics, surveillance and transportation.


Harris & GPS Technology: Evolving a Global Utility

Ingenuity to Guide Your Journey

harrisAuthored by industry expert James Phelan, this white paper documents Harris’ past, present, and future efforts to support United States dominance in this important global utility. From waveform generation to transmission, command, and control to precise timekeeping technology you’ll learn how Harris continues to advance technologies that apply specifically to the GPS constellation.


TerraGo’s Definitive Guide to Sharing GIS Maps

6 Best Practices for Sharing Interactive Maps with Anyone, Anywhere

terragologoFrom paper to PDF, from GIS to the cloud, the ability to share maps with people outside the office has changed dramatically over the last decade. With the rise of web services, cloud computing and mobile devices, there are more ways to share maps than ever before.

This guide shows you how to: Maintain control, increase portability, improve accessibility, ensure collaboration, guarantee offline availability and archive map data.


The Definitive Guide to GPS Data Collection

5 Reasons to Replace Proprietary GPS Handhelds with a Modern, Mobile Solutionterragologo

This guide was written to help organizations leave the past behind and join today’s mobile revolution. Here are five compelling reasons for operations managers to modernize their field data collection workflows, free their field workers from the shackles of proprietary GPS handhelds and tap into the massive benefits of modern technology.

The definitive guide covers the following areas: Cost, hardware, software, data and productivity.


Sparton: RE:VISION: A New Paradigm for Mid-Lifecycle Design Changes

Sparton-Logo-NavEx-436x76-trnspFor decades, the general belief was that replacing key components during the mid-lifecycle design was simply too costly and burdensome — and that any changes in product design would need to wait until the next generation.

Today, technology is changing too fast to wait until the next generation of a product to add new capabilities and to risk losing a competitive edge or, worse yet, to risk the introduction of a new product that is already obsolete. Fortunately, there are other options. With the right alignment of partners and suppliers, a mid-lifecycle component change can actually provide both greater performance capabilities and cost savings. In our white paper, “Re:Vision: A New Paradigm for Mid-Lifecycle Design Changes,” Sparton Corporation explores when and why a mid-lifecycle component change makes sense.

 


Exelis: The Threat of GPS Jamming

The Global Positioning System (GPS) has become a ubiquitous “utility” supporting critical infrastructure depended on by many across all industries. Originally developed for providing precision navigation and timing to the United States Military, society has rapidly developed a strong reliance on GPS information in many facets of life including transportation, communications, and financial transactions.


Loctronix: Assuring Continuous High-Performance PNT: Solutions for GNSS Challenged/Denied Environments

Assuring continuous high-performance Positioning, Navigation and Timing (PNT) in GPS/GNSS-challenged and –denied environments poses a critical problem for mission designers and project engineers. How do you calculate PNT if you cannot receive sufficient signals, if signals are blocked or degraded or if you are beyond signal range? How do you know, in theaters of war and other combatant situations, if the signals you are receiving are true or counterfeit? What can you do if the PNT signals are blocked, intentionally or otherwise?


Symmetricom: Leading Edge Technology Enables a Chip Scale Atomic Clock

The Symmetricom QUANTUM Chip Scale Atomic Clock (SA.45s CSAC) delivers the accuracy and stability of an atomic clock to portable applications for the first time.Atomic clocks have enabled a world where ultra-precise timekeeping is now mandatory for communications, navigation, signal processing and many other applications critical to a modern functioning society. However, as smaller, lighter and more energy efficient — in other words, more portable — versions of these systems have emerged, atomic clocks themselves have not followed the same trend lines. Why not?


Averna: Expanding GNSS Testing with Multiple Synchronized Signal Recorders

In order to greatly expand recording bandwidth, you can deploy multiple tightly synchronized recorders in the field. Averna studied the example of two RP-5300 recorders (2×50 MHz channels each) that were synchronously inter-connected to form a virtual recorder with total bandwidth of 200 MHz.

Download this white paper to learn more about how you can expand GNSS spectrum coverage by capturing RF signals from all GNSS orbiting satellites, then storing and playing the signals back in the lab to accelerate receiver testing.


Peterson Mobility Solutions: Location-Based Advertising Report

“Location-Based Advertising: The Key to Unlocking the Most Value in the Mobile Advertising and Location-Based Services Markets”

Written by: Lisa Peterson Rob Groot
Edited by: Matteo Luccio

The authors provide insight on the states of the LBS and Mobile Marketing/Advertising markets in the United States. They explore the evolution from subscription-based LBS towards free LBS and what is needed to make an ad-funded business model work. They discuss the benefits of bringing together the world of LBS and that of mobile marketing/advertising to create LBA. They further explain what the stakeholders in the market — consumers, advertisers, and the ―enabling companies (providers of LBS content, applications, and platforms) — stand to gain from LBA. Finally, they discuss what combination of technologies, business models, and strategies, need to align to unleash LBA’s market potential and why LBA is the path to creating more value in both the LBS and mobile advertising segments.


CAST Navigation: The F-16/CAST-3000

When the need arises for a system to support H764G/LN100G integration and test or per- form dynamic testing of JDAM equipped F-16 aircraft — CAST has the solution. CAST Navigation has developed the CAST-3000 to provide the tool to support all your integration and test requirements. With a proven track record of decreasing navigation systems integration costs, improving H764G/LN100G integration success, supporting flight test planning, reproducing flight results, providing JDAM integration and test support,  the CAST-3000 is the solution.


CAST Navigation: Guided Munitions Testing/JDAM

CAST Navigation recently demonstrated the capability to perform dynamic ground testing of GPS/INS guided munitions including the Joint Direct Attack Munition (JDAM) and Extended Range Guided Munition (ERGM). The CAST system provides coordinated GPS and inertial data to the weapon’s navigation systems simultaneously with the launch platform’s navigation system. This permits testing of the entire weapon system interface. The initialization data and the transfer alignment data are communicated from the launch platform to the weapon and the weapon’s navigation parameters are collected while both the weapon and the aircraft are executing the same simulated motion.


Esri: ArcGIS Enterprise Security: Delivering Secure Solutions

Effective enterprise security can be a challenge for the IT architects and security specialists who design, deploy, and support mission-critical solutions. While recent industry advancements, especially in the areas of Web services standards and services-oriented architectures, are helping architects to more effectively meet their security objectives, these new capabilities are also contributing to an already complex set of protocols, tools, and architectures.
Download our whitepaper.


KVH Industries: An Update on KVH Fiber Optic Gyros and their Benefits Relative to Other Gyro Technologies


 

NovAtel: SPAN Technology

NovAtel’s SPAN technology tightly couples OEM precision GNSS receivers with robust Inertial Measurement Units (IMUs) to provide reliable, continuously available, position, velocity and attitude — even through short periods of time when satellite signals are blocked or unavailable.


Symmetricom: Commercial Time-Scale System

Symmetricom’s multi-clock turnkey system provides a real-time local UTC time scale and can also apply the most accurate GNSS and SatCom techniques for measuring offsets between geographically dispersed clocks.

As the international standard time scale, Universal Coordinated Time (UTC) is the composite of clocks throughout the world. The time of each clock is reported to the International Bureau of Weights and Measures (BIPM) using either GPS common view (CV) or Two-Way Satellite Time and Frequency Transfer. National laboratories also compute a local time scale steered to agree with UTC designated as UTC (local). Local UTC time-scale systems have state-of-the-art frequency stability, phase noise performance, and system availability. To be incorporated in UTC, their internal clocks cannot themselves be steered by UTC and the CV data must be calculated and reported to the BIPM in accordance with its published method and format.

The Symmetricom Time-Scale System meets these requirements using Symmetricom manufactured commercial timing products. Compared to other solutions, Symmetricom offers faster deployment, lower ownership costs, higher product quality, spare parts that are easier and less expensive to get, and a single point of responsibility for all system support.


Hemisphere GPS: Crescent Vector OEM Board