Navigation in Space by X-ray Pulsars will consist of two parts. One is on modeling of X-ray pulsar signals. The second part explains how X-ray pulsar signals can be used to solve the relative navigation problem. This book formulates the problem, proposes a recursive solution, and analyzes different aspects of the navigation system. This book will be a comprehensive source for researchers. It provides new research results on signal processing techniques needed forX-ray pulsar based navigation in deep space. Provides a comprehensive framework for X-ray pulsar signal processing techniques. Formulates the relative navigation problem between two spacecraft based on X-ray pulsar measurements. Examines solutions to X-ray pulsar based relative navigation integrating the navigation system with Inertial Measurement Units (IMUs). INDICE: 1 Prologue. 1.1 Current Spacecraft Navigation Systems. 1.2 Pulsar-Based Relative Navigation. 1.2.1 Why Relative Navigation? Why Celestial-Based Systems?- 1.2.2 Pulsars. 1.2.3 Why Use X-ray Pulsars for Navigation?- 1.2.4 History of Pulsar-Based Navigation. 1.3 Proposed Navigation System Structure. 1.4 Thesis Outline. 2 Signal Modeling. 2.1 X-ray Detectors. 2.2 X-ray Pulsar Signal. 2.2.1 Constant-Frequency Model. 2.2.2 Time-Dependent-Frequency Model. 2.3Discussion. 2.4 Epoch Folding. 2.4.1 Effect of Velocity Errors. 2.5 Generating Photon TOAs. 2.6 Simulation. 3 Pulse Delay Estimation. 3.1 Pulse Delay Estimation. 3.2 The Cramér-Rao Lower Bound (CRLB). 3.3 Discussion. 3.4 Simulation. 4 Pulse Delay Estimation Using Epoch Folding. 4.1 Cross Correlation Technique.4.2 Nonlinear Least Squares Technique. 4.3 Simulation. 5 Pulse Delay Estimation via Direct Use of TOAs. 5.1 Maximum-Likelihood Estimator (MLE). 5.2 Numerical Determination of the MLE. 5.3 Simulation. 6 Recursive Position Estimation. 6.1 System Dynamics. 6.2 Measurements. 6.3 Discrete-Time Estimation Process. 6.4 Discussion. 6.5 Simulation. 7 Epilogue References.
- ISBN: 978-1-4419-8016-8
- Editorial: Springer New York
- Encuadernacion: Cartoné
- Páginas: 118
- Fecha Publicación: 26/02/2011
- Nº Volúmenes: 1
- Idioma: Inglés