Fundamentals of Global Positioning System Receivers A Software Approach - Chapter 1 docx

... the vii Contents Preface xiii Notations and Constants xv Chapter 1 Introduction 1 1 .1 Introduction 1 1 .2 History of GPS Development 1 1 .3 A Basic GPS Receiver 2 1 .4 Approaches of Presentation 3 1 .5 Software Approach ... Spherical Coordinate System 16 2 .9 Earth Geometry 17 2 .10 Basic Relationships in an Ellipse 18 2 .11 Calculation of Altitude 20 2...

Ngày tải lên: 14/08/2014, 10:22

... [dx u dy u dz u db u ] T a         a 11 a 12 a 13 1 a 21 a 22 a 23 1 a 31 a 32 a 33 1 a 41 a 42 a 43 1 . . . a n1 a n2 a n3 1         (2 .15 ) 12 BASIC GPS CONCEPT user clock error cannot be corrected ... is         dr 1 dr 2 dr 3 dr 4 . . . dr n                 a 11 a 12 a 13 1 a 21 a 2...

Ngày tải lên: 14/08/2014, 10:22

... maximum Fundamentals of Global Positioning System Receivers: A Software Approach James Bao-Yen Tsui Copyright  2000 John Wiley & Sons, Inc. Print ISBN 0-4 7 1- 3 815 4-3 Electronic ISBN 0-4 7 1- 2 005 4-9 32 CHAPTER ... September 11 13 , 19 91. 15 . Nieuwejaar, P., “GPS signal structure,” NATO Agard lecture series No. 16 1, NAV- STAR GPS system, Septem...

Ngày tải lên: 14/08/2014, 10:22

... Promenade, SW, Washington, DC, 19 96. Fundamentals of Global Positioning System Receivers: A Software Approach James Bao-Yen Tsui Copyright  2000 John Wiley & Sons, Inc. Print ISBN 0-4 7 1- 3 815 4-3 ... performance,” Chapter 3 in Parkinson, B. W., Spilker, J. J. Jr., Global Positioning System: Theory and Appli- cations, vols. 1 and 2, American Institute...

Ngày tải lên: 14/08/2014, 10:22

... are 71 72; 91 11 4; 12 1 14 4; 15 1 17 4; 18 1 19 6. All reserved data fields sup- port valid parity within their respective words. The ephemeris parameters in subframe 1 are listed in Table 5.8. 5 .13 NAVIGATION ... navigation data rate carried by the P code through phase modulation is at a 50 Hz rate. 5.5 C / A CODE AND DATA FORMAT (1, 2,5) The C / A code is a bi-phase modulat...

Ngày tải lên: 14/08/2014, 10:22

... Spilker (11 ) indicated that a 1- bit ADC degrades the signal-to-noise ratio by 1. 96 dB and a 2-bit ADC degrades the signal-to-noise by 0.55 dB. Many commercial GPS receivers use only 1- or 2-bit ADCs. Chang (12 ) claims ... preferred approach, in actual laboratory experiments Figure 6.5b is used because of the availability of amplifiers. In Figure 6.5b, the M / A COM ANP-C...

Ngày tải lên: 14/08/2014, 10:22

... frequency accuracy is to use different portions of the data. Six fine frequencies are calculated from dif- ferent portions of the input data. The data used are 1 25000, 50 01 300 01, 10 0 01 350 01, 15 0 01 400 01, ... input data point. After the input data are shifted by 5,000 points, one ms of data are searched. In 1 ms there are 5,000 amplitude data points. Since there are 21 lo...

Ngày tải lên: 14/08/2014, 10:22

... 0 x(n)e j2pnk / N (8.40) Fundamentals of Global Positioning System Receivers: A Software Approach James Bao-Yen Tsui Copyright  2000 John Wiley & Sons, Inc. Print ISBN 0-4 7 1- 3 815 4-3 Electronic ISBN 0-4 7 1- 2 005 4-9 16 5 CHAPTER ... complicated and calculation intensive. In order to track 20 ms of data without a navigation data phase transition, o...

Ngày tải lên: 14/08/2014, 10:22

... 1 1 1 1 0 0 1 1 0 1 0 0 1 ]; % by B.W. Parkinson & J.J. Spilker h 3 [ 1 0 1 1 1 0 1 1 0 0 0 1 1 1 1 1 0 0 1 1 0 1 0 0 ]; h 4 [ 010 1 1 1 01 10 0 01 1 1 1 10 01 1 010 ]; h 5 [ 10 1 01 1 10 1 10 ... p. 13 1 h 2 [ 0 1 1 1 0 1 1 0 0 0 1 1 1 1 1 0 0 1 1 0 1 0 0 1 ]; % by B.W. Parkinson & J. J. Spilker h 3 [ 1 0 1 1 1 0 1...

Ngày tải lên: 14/08/2014, 10:22

... 2 81 11. 8 Calculating Signal-to-Noise Ratio (S/N) 283 11 .9 Basic Idea of Finding the Pseudorange 284 11 .10 Obtaining the Summed Early and Late Peak Correlation Outputs (y es and y ls ) 286 11 .11 ... Count 81 5 .11 Parity Check Algorithm 82 5 .12 Navigation Data from Subframe 1 88 5 .13 Navigation Data from Subframes 2 and 3 90 5 .14 Navigation Data from Subframes 4 and 5–Support...

Ngày tải lên: 01/06/2014, 10:14