| Document Type
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BL
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| Record Number
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961487
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| Doc. No
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b715857
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| Main Entry
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Harper, Neil.
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| Title & Author
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Server-side GPS and assisted-GPS in Java /\ Neil Harper.
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| Publication Statement
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Boston :: Artech House,, ©2010.
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| Series Statement
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GNSS technology and applications series
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| Page. NO
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1 online resource (xvii, 239 pages) :: illustrations
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| ISBN
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1607839865
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: 9781607839866
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1607839857
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9781607839859
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| Bibliographies/Indexes
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Includes bibliographical references and index.
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| Contents
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Server-Side GPS and Assisted-GPS in JavaTM; Contents; Preface; Acknowledgments; Chapter 1 Introduction; 1.1 Overview; 1.2 Terminology; 1.3 Global Navigation Satellites Systems (GNSS); 1.4 GNSS Augmentations; 1.5 GPS from a High Level; 1.6 Assisted-GNSS from a High Level; 1.7 A-GNSS Protocols and Standards; 1.8 Why Is an Accurate Location Required?; 1.9 Location Market; 1.9.1 E9-1-1; 1.9.2 Location-Based Services; 1.9.3 Lawful Intercept Services; 1.10 Java and Software Design for A-GNSS Applications; 1.10.1 Coding in Java; 1.11 Organization of This Book; References
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3.11 Decoding and Storing the Navigation Model3.11.1 Storing the Raw NAV Data; 3.11.2 Running the Classes to Store the Raw Data; 3.11.3 Other Sources of Raw NAV Data; 3.11.4 Decoding the NAV Data into Useful Information; 3.11.5 RINEX as a Data Source for the Navigation Message; 3.11.6 Implementation of Methods Using the NAV Model; 3.12 GPS Signal Acquisition; 3.13 Receiver Positioning; 3.13.1 Uncertainty and Confidence; 3.14 Factors Affecting Location Accuracy; 3.15 Geometry and Dilution of Precision; 3.16 Differential-GPS; 3.17 Software Projects; References
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4.8 Assistance Data Type SizReferences; Chapter 5 Assisted-GPS Location Within a Network; 5.1 Location Architectures; 5.2 A-GPS Protocols and Messaging; 5.3 RRLP; 5.3.1 RRLP Procedures; 5.3.2 RRLP Messages; 5.3.3 RRLP Encoding and ASN. 1 Packed Encoding Rules; 5.3.4 RRLP Implementation; 5.3.5 Testing the RRLP Classes; 5.3.6 Communication Across Sockets with RRLP; 5.4 PCAP and RRC; 5.4.1 PCAP Procedures; 5.5 Software Projects; References; Chapter 6 Position Calculation; 6.1 Position Calculation and Handset-Assisted A-GPS; 6.2 The Accuracy and Yield Trade-Off
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Chapter 2 Coding for GNSS and the Coordinate Reference Frame2.1 Coordinate Reference Frame; 2.2 World Geodetic System 1984; 2.3 Source Code Structure and Management; 2.4 WGS 84 Implementation; 2.5 Unit Testing; 2.6 Debugging; 2.7 Performance Testing and Benchmarking; 2.8 Code Coverage Analysis; 2.9 Configuration Management; References; Chapter 3 GPS; 3.1 GPS Constellation and Segments; 3.2 GPS Services; 3.3 Satellites; 3.4 Ranging Codes; 3.5 PRN Codes; 3.6 GPS C/A Code; 3.7 GPS L1 Signal; 3.8 GPS L2 Signal; 3.9 GPS Time; 3.10 Broadcast Information Navigation Message Structure (NAV)
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Chapter 4 Assisted-GPS and Assistance Data4.1 The Assistance Model; 4.2 GNSS Reference Server (GRS); 4.2.1 GPS Reference Receiver Configuration for a GPS; 4.2.2 GRS Interface; 4.2.3 Open Source GNSS Reference Server (OSGRS); 4.3 Location Server (LS); 4.4 Location-Based Application (LBA); 4.5 Emergency Services Messaging Entity; 4.6 The Handset; 4.7 Assistance Data Types; 4.7.1 Reference Time; 4.7.2 Reference Location; 4.7.3 Navigation Model; 4.7.4 Ionosphere Model; 4.7.5 UTC Model; 4.7.6 Acquisition Assistance; 4.7.7 Real-Time Integrity; 4.7.8 Almanac; 4.7.9 DGPS Corrections
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| Abstract
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Assisted GPS (A-GPS) is a technology that greatly enhances GPS performance and capabilities. This innovative book offers you a detailed explanation of the way that an A-GPS server operates from a practical point of view. You learn how A-GPS improves critical aspects of GPS, such as time-to-first-fix (TTFF) and yield. The book focuses on handset-assisted A-GPS, where the server can make use of additional information and perform more effective hybrid calculations. You gain insight into factors affecting accuracy and how these errors can be minimized using A-GPS. Moreover, this unique resource includes example code in Java for all key functions, along with sequence diagrams in UML that help ensure a solid understanding of the material. CD-ROM Included! Contains valuable Java source code and example applications that illustrate key points throughout the text. Complete class and sequence diagrams are also provided where applicable.
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| Subject
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Global Positioning System-- Computer networks.
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| Subject
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Java (Computer program language)
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Java (Computer program language)
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TECHNOLOGY ENGINEERING-- Remote Sensing Geographic Information Systems.
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| Dewey Classification
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910.285
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| LC Classification
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G109.5.H376 2010eb
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