After the first edition of this book was published at the end of 2003, I was very happy to put the hard work of book writing behind me and concentrate myself with my small team on the development of a multi-functional GPS/Galileo software (MFGsoft). The experiences from the practice and the implementation of the theory and algorithms into the high standard software gave me a strong feeling that I would very much like to revise and to supplement the original book, to modify parts of the contents and to - port on the new progress and knowledge. Furthermore, with the EU Galileo system now being realised and the Russian GLONASS system under development; the GPS theory and algorithms should be re-described so that they are also valid for the Galileo and GLONASS systems. Therefore, I am grateful to all of the readers of this book, whose int- est made it possible so that the Springer asked me to complete this second edition. I remember that I was in a hurry during the last check of the layout of the first edition. The description of a numerical solution of the variation equation in Sect. 11. 5. 1 was added to the book at the last minute in a limited extension of exactly one page.
Aus den Rezensionen zur 2 Auflage: "... eine umfassend überarbeitete und ergänzte Version ... Xu verfolgt das Ziel, dem Leser detaillierte lnformationen zur Auswertung von GNSS-Daten nahezubringen, die für eine praktische Software-Entwicklung relevant sind. ... Das Buch gliedert sich in ... 12 Kapitel, wobei die ... Kapitel mit einer sehr klaren Erläuterung eingeführt werden, die dem Leser die Konzepte der Kapitel und Zusammenhänge mit anderen Abschnitten ... vermitteln. ... Die Darstellung der Formeln und Gleichungen sind gut lesbar und ermöglichen prinzipiell eine ... Umsetzung in Software-Algorithmen. ... Das Buch wird ergänzt durch eine ... umfangreiche Literaturliste ..." (Jörg Reinking, in: zfv - Zeitschrift für Geodäsie, Geoinformation und Landmanagement, 2009, Vol. 134, Issue 2, S. 122 f.)
"It focuses on the theory, algorithms, and applications of GPS. ... The book contains many illustrations, some of which are in color, references at the end of chapters and also at the end of the book, two appendices, and a handy index. ... This book will be useful for those interested in studying or working with navigational systems such as GPS." (Computing Reviews, June, 2017)