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Final Report 6/30/2011 FINAL REPORT 6/30/2011 ______________________________________________________________________________ _______ Full data for all device tests conducted by the Working Group is available for download at: ftp://twg:[email protected] Contents 1. Introduction ............................................................................................................................................. 6 2. Organization and Functioning of the WG and TWG............................................................................. 7 2.1 Organization of the WG and TWG ............................................................................................................. 7 2.2 Participation in the TWG ............................................................................................................................ 9 2.3 Work Plan .................................................................................................................................................. 9 2.4 Functioning of the TWG ........................................................................................................................... 12 2.5 Overview of the Testing Process ............................................................................................................. 12 2.6 Anonymity of Testing Results ................................................................................................................... 14 2.7 Abstract of Sub-Team Report Summaries ............................................................................................... 14 2.7.1 Aviation ................................................................................................................................... 15 2.7.2 Cellular ................................................................................................................................... 16 2.7.3 General Location and Navigation ........................................................................................... 17 2.7.4 High Precision, Timing and Networks ..................................................................................... 21 2.7.5 Space-based Receivers ......................................................................................................... 24 3. Sub-Team Reports ................................................................................................................................ 27 3.1 Aviation Sub-Team ........................................................................................................................ 27 Executive Summary ................................................................................................................................ 27 3.1.1 Work Plan Item 1: Establish Pertinent Analytical and Test Methodologies and Assumptions Underlying the Test Regime ................................................................................................................... 28 3.1.2 Work Plan Item 2: Select the Categories of Receivers and Receivers to be Tested .............. 31 3.1.3 Work Plan Item 3: Develop Operational Scenarios ................................................................. 32 3.1.4 Work Plan Item 4: Establish the Methodology for Analyzing Test Results .............................. 37 3.1.5 Work Plan Item 5: Derive the Test Conditions Based on the Established Operational Scenarios 39 3.1.6 Work Plan Item 6: Write the Test Plan and Procedures ......................................................... 40 3.1.7 Work Plan Item 7: Identify and Engage Appropriate Neutral Test Facility(ies) for the Testing Portion of the Work Plan ......................................................................................................................... 42 3.1.8 Work Plan Item 8: Perform Testing ......................................................................................... 42 3.1.9 Work Plan item 9: Analyze Test Results Based on Established Methodology ........................ 45 3.1.10 Work Plan Item 10: Assess Operational Scenarios Using Analytics and Test Results ....... 47 3.1.11 Work Plan Item 11: Assess Whether any Mitigation Measures are Feasible and Appropriate 50 3.2 Cellular Sub-Team ......................................................................................................................... 54 3.2.1 Work Plan Item 1: Establish Pertinent Analytical and Test Methodologies and Assumptions Underlying the Test Regime ................................................................................................................... 55 3.2.2 Work Plan Item 2: Select the Categories of Receivers and Receivers to be Tested ............. 60 3.2.3 Work Plan Item 3: Develop Operational Scenarios ................................................................. 63 3.2.4 Work Plan Item 4: Establish the Methodology for Analyzing Test Results .............................. 64 3.2.5 Work Plan Item 5: Derive the Test Conditions Based on the Established Operational Scenarios 64 3.2.6 Work Plan Item 6: Write the Test Plan and Procedures ......................................................... 64 3.2.7 Work Plan Item 7: Identify and Engage Appropriate Neutral Test Facility(ies) for the Testing Portion of the Work Plan ......................................................................................................................... 72 3.2.8 Work Plan Item 8: Performance Testing ................................................................................. 73 3.2.9 Work Plan item 9: Analyze Test Results Based on Established Methodology ........................ 75 Figure 3.2.3 CDF of Final of Passing Blocker Levels across All Devices and Test Suites for the lower 10MHz ................................................................................................................................................................ 79 3.2.10 Conclusions regarding L Band Interference Impact to Cellular GPS Receivers ............... 113 3.2.11 Work Plan Item 10: Assess Operational Scenarios Using Analytics and Test Results ..... 117 3.2.12 Work Plan item 11: Prevention and Mitigation Measures ................................................. 117 3.2.13 Summary of Live Sky Testing by LightSquared and TechnoCom Wireless...................... 120 3.3 General Location / Navigation Sub-Team ................................................................................. 122 3.3.0 Executive Summary .............................................................................................................. 122 3.3.1 Establish Pertinent Analytical and Test Methodologies and Assumptions Underlying the Test Regime 129 3.3.2 Work Plan Item 2: Select the Categories of Receivers and Receivers to be Tested ............ 130 3.3.3 Work Plan Item 3: Develop Operational Scenarios ............................................................... 132 -2- 3.3.4 Work Plan Item 4: Establish the Methodology for Analyzing Test Results ............................ 133 3.3.5 Work Plan Item 5: Derive the Test Conditions Based on the Established Operational Scenarios 133 3.3.6 Work Plan Item 6: Write the Test Plan and Procedures ....................................................... 133 Combined Sub-Team Perspective ........................................................................................................ 133 3.3.7 Work Plan Item 7: Identify and Engage Appropriate Neutral Test Facility(ies) for the Testing Portion of the Work Plan ....................................................................................................................... 133 3.3.8 Work Plan Item 8: Perform Testing ....................................................................................... 134 3.3.9 Work Plan Item 9: Analyze Test Results Based on Established Methodology ..................... 136 3.3.10 Work Plan Item 10: Assess Operational Scenarios Using Analytics and Test Results ..... 167 3.3.11 Work Plan Item 11: Assess Whether any Mitigation Measures Are Feasible and Appropriate 176 3.4 High Precision, Timing, and Networks Sub-Team .................................................................... 180 1. Executive Summary .......................................................................................................................... 180 1.1 GPS Community Positions ............................................................................................... 180 1.2 LightSquared Positions ..................................................................................................... 181 2. Introduction and Background ............................................................................................................ 183 3. Test Methodologies and Assumptions .............................................................................................. 186 3.1 Background Assumptions ........................................................................................................ 186 3.2 LightSquared Rollout Plan ....................................................................................................... 186 3.3 Harmful Interference ................................................................................................................ 187 3.3.1 Introduction .................................................................................................................... 187 3.3.2 Coverage Measure ........................................................................................................ 187
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