# Manual Understanding satellite navigation

It helps you to conceptualize the underlying theory from first principles, building up your knowledge gradually using practical demonstrations and worked examples. A full range of MATLAB simulations is used to visualize concepts and solve problems, allowing you to see what happens to signals and systems with different configurations. Implementation and applications are discussed, along with some special topics such as Kalman Filter and Ionosphere. How a satellite navigation system works How to improve your efficiency when working with a satellite navigation system How to use MATLAB for simulation, helping to visualize concepts Various possible implementation approaches for the technologyThe most significant applications of satellite navigation systems Teaches the fundamentals of satellite navigation systems, using MATLAB as a visualization and problem solving tool Worked out numerical problems are provided to aid practical understanding On-line support provides MATLAB scripts for simulation exercises and MATLAB based solutions, standard algorithms, and PowerPoint slides From the Back Cover Learn the fundamentals of satellite navigation technology, backed up by practical simulations and visualizations in MATLAB.

A full range of MATLAB simulations is used to visualize concepts and solve problems through simulations, allowing you to see what happens to signals and systems with different configurations. How a satellite navigation system works How to improve your efficiency when working with a satellite navigation system How to use MATLAB for simulation, helping to visualize concepts Various possible implementation approaches for the technologyThe most significant applications of satellite navigation systems About the author.

Tech course on Satellite Communications and Satellite Navigation.

Would you like to tell us about a lower price? With this book you will learn: How a satellite navigation system works How to improve your efficiency when working with a satellite navigation system How to use MATLAB for simulation, helping to visualize concepts Various possible implementation approaches for the technologyThe most significant applications of satellite navigation systems Teaches the fundamentals of satellite navigation systems, using MATLAB as a visualization and problem solving tool Worked out numerical problems are provided to aid practical understanding On-line support provides MATLAB scripts for simulation exercises and MATLAB based solutions, standard algorithms, and PowerPoint slides.

Referencing a position 1. Radio navigation system Conceptual questions Chapter 2. Satellite Navigation 2.

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Satellite navigation 2. Architectural components 2. Control segment Conceptual questions Chapter 3. Satellites in Orbit 3.

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Kepler's laws and orbital dynamics 3. Orbital orientation relative to earth 3. Perturbation of satellite orbits 3. Different types of orbit 3. Selection of orbital parameters Conceptual questions Chapter 4. Navigation Signals 4.

Navigation signal 4. Navigation data 4. Ranging codes 4. Encryption 4. Multiple access 4. Digital modulation 4. Typical link calculations Conceptual questions Chapter 5. Navigation Receiver 5. Navigation receiver 5. Functional units of user receivers Conceptual questions Chapter 6. Navigation Solutions 6.

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Fundamental concepts 6. Generation of observation equation 6. Linearization 6. Solving for position 6. Other methods for position fixing 6. Velocity estimation Conceptual questions Chapter 7. Errors and Error Corrections 7. The orbital data is transmitted in a data message that is superimposed on a code that serves as a timing reference.

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The satellite uses an atomic clock most accurate time and frequency standards known to maintain synchronization of all the satellites in the constellation. The receiver compares the time of broadcast encoded in the transmission with the time of reception measured by an internal clock, thereby measuring the time-of-flight to the satellite.

The receiver measures signals from several satellites at the same time so that it can use triangulation to determine its location. Triangulation is the process of determining the location of a point by measuring the angles to it from two known points. The precise satellite locations are included in the transmission and the time-of-flight of the signal is used to calculate the distance to each satellite.

## Understanding Satellite Navigation - MATLAB & Simulink Books

The receiver then does some math and calculates its location on the Earth. The more satellites the receiver can track, the more accurate the location calculation. The receiver calculates 4 parameters; latitude, longitude, altitude and time. As a result, the receiver generally needs to see at least 4 satellites to calculate the 4 unknowns. It can give estimates for the values with fewer satellites, but the potential error increases.

## The Beginnerâ€™s Guide to Different Satellite Navigation Systems

The basic triangulation math is not that complicated, but the fact that the known points, the satellites, are moving very fast and the fact that the Earth is a curved surface adds quite a bit of complexity. In addition, the Earth is not a perfect sphere and is not uniformly shaped or curved. This adds some error depending on how far off the average curvature a specific location is.

For this reason, local augmentation systems are used.

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The receiver can also use regional data sets that better describe the local geography and ultimately give a more accurate position. In the early days of the U. This error decreased the accuracy of the system so that it was not as effective for those outside the United States military. Commercial organizations began to use terrestrial beacons on the Earth to augment the system and account for the error. These beacons were built along the coast and waterways by the United States Coast Guard and similar organizations in other countries to help ships navigate local coastlines and waterways.

This required a separate receiver, which increased the cost and really prevented the systems from becoming commercially viable. Other agencies in the United States and around the world created their own augmentation systems to improve accuracy. This includes the Federal Aviation Administration for commercial aircraft navigation and the Coast Guard for maritime navigation. Similar systems were created in Europe, Russia, Japan, India and others. The error code was deactivated in and GPS has since become very widely used.