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ATS-6 Final Engineering Performance Report NASA ,-.:1NASA-RP-1080-VOL-5 Reference 19820008278 Publication 1080 _"_:-__'_,_:__, c_,_,_ t c_,_, r,', . _!,.,., .,,, ._, ;,,".:2,', J4"7;_r.-_: ',,,:z :_, ^, November 1981 ' " -........._'_' ATS-6 Final Engineering Performance Report Volume V - Propagation Experiments NI A NASA Reference Publication 1080 1981 ATS-6 Final Engineering Performance Report Volume V- Propagation.Experiments Robert O. Wales, Editor Goddard Space Flight Center Greenbelt, Maryland NI A National Aeronautics and Space Administration Scientific and Technical Information Branch An EngineeringEvaluation in Six Volumes Volume I: Programand System Summaries;Mechanical and Thermal Details Part A: Program Summary Part B: Mechanical Subsystems Part C: Thermal Control and Contamination Monitor Volume II: Orbit and Attitude Controls Part A: Attitude Control Part B: Pointing Experiments Part C: Spacecraft Propulsion Part D: Propulsion Experiment Volume III: Telecommunications and Power Part A: Communications Subsystem Part B: Electrical Power Subsystem Part C: Telemetry and Command Subsystem Part D: Data Relay Experiments Volume IV: Television Experiments Part A: The Department of Health, Education and WelfareSponsored Experiments Part B: Satellite Instructional TelevisionExperiment (India) Part C: Independent TelevisionExperiments Volume V: Propagation Experiments Part A: Experiments at 1550 MHz to 1650 MHz Part B: Experiments at 4 GHz to 6 GHz Part C: Experiments Above 10GHz Volume VI: Scientific Experiments This document makes use of international metric units according to the Syst_me International d'Unit_s (SI). In certain cases, utility requires the retention of other systems of units in addition to the SI units. The conven- tional units stated in parentheses following the computed SI equivalents are the basis of the measurements and calculations reported. For sale by the National Technical Information Service Springfield, Virginia 22161 Price VOLUME V CONTENTS Page FOREWORD.............................................................. xxi INTRODUCTION .......................................................... xxvii PART A EXPERIMENTS AT 1550 MHz TO 1650 MHz CHAPTER 1 - "INTEGRATED L-BAND EXPERIMENTS" SYSTEM ................. 3 PURPOSE AND SYSTEM PARAMETERS ................................... 3 Objective of Experiments ............................................ 3 Participants ........................................................ 4 INTEGRATED L-BAND SYSTEM ......................................... 4 ATS-6 System ..................................................... 6 General ...................................................... 6 Ground Terminals .................................................. 7 Rosman Ground Station ......................................... 7 Mojave Station ................................................ 7 Santiago, Chile Station .......................................... 9 FAA (NAFEC) Ground Terminal .................................. 9 Canada Terminal ............................................... 10 ATSOCC Terminal ............................................. 10 Airborne Terminals ................................................. 10 FAA KC-135 Aircraft Terminal .................................... 10 ESA Comet IV Terminal ......................................... 12 Canada Jetstar Aircraft Terminal ................................... 12 Maritime Terminals ................................................. 12 iii VOLUME V CONTENTS (continued) Page CHAPTER 2 - "INTEGRATED .L-BANDEXPERIMENTS" TEST RESULTS ........... 15 PLACE AERONAUTICAL EXPERIMENTS .................................. 15 Experiment Results ................................................. 16 DOT/TSC AERONAUTICAL EXPERIMENTS ................................ 17 Modem Evaluation ................................................. 17 Multipath Characteristics ............................................. 21 Aircraft Antenna Evaluation .......................................... 21 DEPARTMENT OF TRANSPORTATION/FEDERAL AVIATION ADMINISTRATION ATC TESTS .......................................... 23 CANADIAN AERONAUTICAL TESTS ..................................... 24 EUROPEAN SPACE AGENCY AERONAUTICAL TESTS ....................... 28 DOC/MARAD MARITIME TESTS ......................................... 30 DEPARTMENT OF TRANSPORTATION/UNITED STATES COAST GUARD MARITIME TESTS ..................................................... 36 EUROPEAN SPACE AGENCY MARITIME TESTS ............................ 38 EUROPEAN SPACE AGENCY DISTRESS BUOY SYSTEM TESTS ............... 42 CONCLUSIONS ....................................................... 44 PLACE Aeronautical Experiments ..................................... 44 Department of Transportation/Transportation Systems Center Aeronautical Experiments ........................................... 46 DOT/FAA Aeronautical (ATC) Tests ......................... ........... 46 Canadian Aeronautical Tests .......................................... 47 European Space Agency Aeronautical Tests .............................. 47 Department of Commerce/Maritime Administration Maritime Tests ............ 47 Department of Transportation/U.S. Coast Guard Maritime Tests .............. 48 European Space Agency Maritime Tests ................................. 48 European Space Agency Distress Buoy System Tests ....................... 48 iv VOLUME V CONTENTS (continued) Page CHAPTER 3 - "MOBILE L-BAND TERMINALS FOR SATELLITE COMMUNICATION" SYSTEM................................................ 49 INTRODUCTION ...................................................... 49 Objectives of Experiments ............................................ 49 Communications Experiments ......................................... 49 Propagation Experiments ............................................ 49 SYSTEM DESCRIPTION ............................. .................. 50 General .......................................................... 50 NASA "Briefcase" Terminal .......................................... 51 Land Mobile Vehicle Terminal (General Electric Corp.) ..................... 56 Land Mobile Path Loss Measurements ..... .............................. 62 i CHAPTER 4 - "MOBILE L-BAND TERMINALS FOR SATELLITE COMMUNICATION" TEST RESULTS .......................................... 65 TEST DESCRIPTION ................................................... 65 Briefcase Terminal .................................................. 65 Land Mobile Terminal (General Electric) ................................ 65 Land Mobile Vehicle Path Loss Measurements ............................ 74 RESULTS ............................................................ 84 Briefcase Terminals ................................................. 84 Land Mobile Terminal (G.E.) ......................................... 87 LAND MOBILE PATH LOSS ............................................. 87 PART B EXPERIMENTS AT 4 GHz TO 6 GHz CHAPTER 5 - RADIO FREQUENCY INTERFERENCE MEASUREMENTS SYSTEM .... 91 EXPERIMENT OBJECTIVES .................. ........................... 91 BACKGROUND ....................................................... 91 v VOLUME V CONTENTS (continued) Page EXPERIMENT SUMMARY .............................................. 92 EXPERIMENT REQUIREMENTS ...... ................................... 94 Minimum Detectable Effective Isotropic Radiated Power .................... 95 Dynamic Range ............................................... i .... 96 Satellite Power Output Requirements ................................... 97 Repeater Noise Figure Requirement .................................... 98 Frequency Accuracy ................................................ 98 Frequency Resolution ............................ : .............. .... 9_ Amplitude Accuracy ................................................. 99 Angular Accuracy .................................................. 99 Required Frequency Search Time ...................................... 99 Signal Detection Threshold Requirements ................................ 100 Pulse Detection Requirements. ........................................ 100 Repeater Requirements Summary ...................................... 100 Repeater G/T ................................................. 100 Repeater Gain and Wideband Noise Output .......................... 101 Ground Subsystem Requirements Summary ........... ........... ....... 101 Spectrum Analysis Receiver and Recorder .. ......................... 101 In-Orbit Calibration ............................................. 102 EXPERIMENT DESCRIPTION ............................................ 102 Experiment Configuration ............................................ 105 Applications Technology Satellite-6 .... ; ............................ ... 105 The Rosman Ground Station Data Acquisition Facility. .................... 108 The Fixed Calibration Terminal ............... i. .... .................. 108 The Portable Calibration Terminal ..................................... 108 RFIME Central Processing Facility .............. i .'.... ................ 110 , Overall System Parameters ........................................... 110 DATA COLLECTION ................................................... I 10 Mode 1-Local RFI Measurement, 3700 to 4200 MHz ...................... 114 Mode 2-System Noise Measurement. ...................... ............ 114 vi VOLUMEV CONTENTS (continued) Page Mode 3-System Calibration .......................................... 115 Mode 4-Computer Processed RFI Measurement .........................
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