Ground Station Design and Analysis for LEO Satellites: Analytical, Experimental and Simulation Approach

Description

Tutorial for analytical and scientific approaches related to LEO satellites ground station performance, including math, experiments, and simulations. Ground Station Design and Analysis for LEO satellites provides complete instructions and steps for ground station performance evaluation, including stations dedicated for scientific or communication purposes, and offers the reader an enhanced learning experience by proposing 40 ideas related to ground station performance assessment. Each idea goes over the math analysis, experiment or simulation, the methodology applied, the results, and a conclusion. This approach provides the reader with the opportunity to compare theoretical results with on-site results, guiding the reader towards intelligent and practical performance evaluation and enhancement. The text also considers the future emerging developments of LEO satellites and their challenges and applications, including multimedia and other scientific applications. Stemming from the highly qualified author’s research work of roughly 20 years, Ground Station Design and Analysis for LEO Satellites includes information on: Interference aspects, covering intermodulation interference modeling for LEO satellite ground stations and downlink adjacent interference for LEO search and rescue satellitesSun synchronization, covering nodal regression and Sun synchronization of low Earth orbits through inclination angle.Horizon plane and communication duration, covering communications duration with LEO satellites under ideal, practical and designed horizon plane for LEO satellite ground stationsFigure of merit and system noise temperature, covering composite and antenna noise temperature, Sun noise experiment and desensibilization measurements at LEO satellite ground stations Ground Station Design and Analysis for LEO Satellites is an innovative and advanced tutorial-based resource that will appeal to satellite engineers (operators/vendors) working on the operation, maintenance, and performance evaluation of ground stations, as well as postgraduate students/early-stage researchers wishing to obtain knowledge on this state-of-the-art technology. Series Page Title Page Copyright Page Dedication Page Preface Acknowledgments 1 LEO Satellite Ground Station Design Concepts 1.1 An Overview of LEO Satellites 1.2 Satellite System Architecture 1.3 The Satellite Ground Station 1.4 Ground Station Subsystems 1.5 Downlink Budget 1.6 Figure of Merit and System Noise Temperature 1.7 Satellite and Ground Station Geometry 1.8 LEO MOST Satellite and Ground Stations References 2 Rain Attenuation 2.1 Rain Attenuation Concepts 2.2 Rain Attenuation for LEO Satellite Ground Station 2.3 Rain Attenuation Modeling for LEO Satellite Ground Station References 3 Downlink Performance 3.1 Downlink Performance Definition 3.2 Composite Noise Temperature at LEO Satellite Ground Station 3.3 Antenna Noise Temperature at LEO Satellite Ground Station 3.4 Downlink Performance – Figure of Merit 3.5 Downlink Performance: Signal‐to‐Noise Ratio (S/N) 3.6 Downlink and Uplink Antenna Separation 3.7 Desensibilization by Uplink Signal at LEO Satellite Ground Station 3.8 Downlink and Uplink Frequency Isolation 3.9 Sun Noise Measurement at LEO Satellite Ground Station References 4 Horizon Plane and Communication Duration 4.1 LEO Satellite Tracking Principles 4.2 Ideal Horizon Plane and Communication Duration with LEO Satellites 4.3 The Range and Horizon Plane Simulation for Ground Stations of LEO Satellites 4.4 Practical Horizon Plane for LEO Ground Stations 4.5 Real Communication Duration and Designed Horizon Plane Determination 4.6 Ideal and Designed Horizon Plane Relation in Space 4.7 Savings on Transmit Power through Designed Horizon Plane at LEO Satellite Ground Stations 4.8 Elevation Impact on Signal‐to‐Noise Density Ratio for LEO Satellite Ground Stations References 5 LEO Coverage 5.1 LEO Coverage Concept 5.2 LEO Coverage Geometry 5.3 The Coverage of LEO Satellites at Low Elevation 5.4 Coverage Belt 5.5 LEO Global Coverage 5.6 Constellation's Coverage – Starlink Case 5.7 Handover‐Takeover Process: Geometrical Interpretation and Confirmation References 6 LEOs Sun Synchronization 6.1 Orbital Sun Synchronization Concept 6.2 Orbital Nodal Regression 6.3 LEO Sun Synchronization and Inclination Window 6.4 Perigee Deviation under Inclination Window for Sun‐Synchronized LEOs References 7 Launching Process 7.1 Introduction to the Launching Process 7.2 Injection Velocity and Apogee Simulation from Low Earth Orbits 7.3 Hohmann Coplanar Transfer from Low Earth Orbits 7.4 The GEO Altitude Attainment and Inclination Alignment References 8 LEO Satellites for Search and Rescue Services 8.1 Introduction to LEO Satellites for Search and Rescue Services 8.2 SARSAT System 8.3 Doppler Shift 8.4 Local User Terminal (LUT) Simulation for LEO Satellites 8.5 Missed Passes for SARSAT System 8.6 LEOSAR Versus MEOSAR References 9 Interference Aspects 9.1 General Interference Aspects 9.2 Intermodulation Products 9.3 Intermodulation by Uplink Signal at LEO Satellite Ground Stations 9.4 Modeling of Interference Caused by Uplink Signal for LEO Satellite Ground Stations 9.5 Downlink Adjacent Interference for LEO Satellites 9.6 Adjacent Satellites Interference (Identification/Avoiding) 9.7 Modulation Index Application for Downlink Interference Identification 9.8 Uplink Interference Identification for LEO Search and Rescue Satellites References 10 Two More Challenges 10.1 Introduction to the Two Challenges 10.2 Downlink Free Space Loss Compensation 10.3 Horizon Plane Width: New Parameter for LEO Satellite Ground Station Geometry References 11 Closing Remarks References Index End User License Agreement