Fundamentals of Global Positioning System Receivers A Software Approach - Chapter 2 ppsx

... delay and multiplication method.search for 1 ms of data to acquire a satellite. Longer data are needed for acquir-ing a certain satellite.One interesting point is that a navigation data change ... operations and each operation consists of a 5,000-point multiplicationand a 5,000-point FFT. The outputs are 5,000 frames of data and each con-tains 2, 500 frequency components because only 2, 500 ... digitized at 5 MHz. The data contain 7satellites, numbers 6, 10, 17, 23 , 24 , 26 , and 28 . Most of the satellites in thedata are reasonably strong and they can be found from1 ms of data. However,this...

... 0x(n)ej2pnk/N(8.40) Fundamentals of Global Positioning System Receivers: A Software Approach James Bao-Yen TsuiCopyright  20 00 John Wiley & Sons, Inc.Print ISBN 0-4 7 1-3 815 4-3 Electronic ISBN 0-4 7 1 -2 005 4-9 165 CHAPTER ... data points are placed in cascade to generate a total of 5 12 data points. There is no discontinuity from data point 25 6, the last datapoint of the first set, to data point 25 7, the beginning of ... and calculation intensive.In order to track 20 ms of data without a navigation data phase transition,one must find a phase transition in the data. This requirement puts an additionalrestraint...

... dataclear angmat navd rymkmatload d:/gps/big data/srvy 821 0;angmatang;ptnumattranspt;rymkmatfintime;[st navd]navdat(angmat);∗find naviga data ( 20 ms) & first angle9.13 ADJUSTMENT ... data are multiplied by p to change to radians. 23 5Index A Acquisition, 134–164, 21 5 21 7Actual anomaly, 47–50, 57–60, 68–70, 21 1 21 2Aliasing, 117–118, 123 – 126 Almanac data, 100Altitude, 2 4, ... data. Fundamentals of Global Positioning System Receivers: A Software Approach James Bao-Yen TsuiCopyright  20 00 John Wiley & Sons, Inc.Print ISBN 0-4 7 1-3 815 4-3 Electronic ISBN 0-4 7 1 -2 005 4-9 193CHAPTER...

... that appears inprint, however, may not be available in electronic format.Library of Congress Cataloging-in-Publication DataTsui, James Bao-yen. Fundamentals of global positioning system receivers ... From the navigation data phase transition the subframesand navigation data can be obtained. Ephemeris data and pseudoranges can beobtained from the navigation data. The ephemeris data are used ... position.1.5 SOFTWARE APPROACH This book uses the concept of software radio to present the subject. The software radio idea is to use an analog-to-digital converter (ADC) to change the input sig-nal into...