gps----Advanced Global Navigation Satellite System Reciever Design

fei_yang

TABLE OF CONTENTS


1  Introduction..........................................................................................................16
1.1  The CASE PhD studentship.........................................................................16
1.2  The future of GNSS .....................................................................................17
1.3  Outline of thesis ...........................................................................................20
2  Background, motivation and goals ......................................................................23
2.1  SSC, SSTL, satellites and GPS....................................................................23
2.2  Research objectives and goals .....................................................................25
3  Signal characteristics ...........................................................................................29
3.1  Heritage GPS signal characteristics .............................................................29
3.2  GPS modernised signal characteristics ........................................................37
3.3  Galileo signal characteristics .......................................................................44
4  PSK and BOC signals ..........................................................................................50
4.1  Signal spectra and bandwidth ......................................................................50
4.2  Correlation functions ...................................................................................54
4.3  Theoretical timing measurement of PSK modulated signals.......................58
4.4  Theoretical timing measurement of BOC modulated signals ......................63
4.5  PSK and BOC multipath analysis ................................................................67
5  Receiver theory ....................................................................................................75
5.1  Searching for PSK signals ...........................................................................76
5.2  Tracking PSK signals...................................................................................84
5.3  Searching for BOC signals...........................................................................90
5.4  Tracking BOC signals..................................................................................99
5.4.1  BOC tracking using a single sideband...............................................100
5.4.2  BOC tracking with multiple gate discriminators ...............................101
5.4.3  The bump-jumping algorithm............................................................105
5.4.4  The effect of distortion on the BJ algorithm......................................112
5.4.5  The effect of multipath on the BJ algorithm......................................116
5.4.6  Hardware requirements of BOC tracking techniques ........................118
5.4.7  Comparison of BOC tracking schemes..............................................118
6  BOC tracking with double estimation receiver..................................................120
6.1  The coherent BOC double estimator..........................................................120
6.2  The incoherent BOC double estimator ......................................................130
6.3  The DE AltBOC receiver...........................................................................133
6.4  Simulated performance of DE BOC ..........................................................135
6.5  The effect of asymmetry ............................................................................139
6.6  Integrity of the DE BOC receiver ..............................................................140
6.7  Hardware requirements of the DE BOC receiver ......................................143
6.8  Summary of the advantages of a DE BOC receiver ..................................144
7  GNSS signal generators and the Giove-A satellite ............................................146
7.1  The Giove-A mission and payload ............................................................146
7.2  Digital noise synthesis ...............................................................................158
8  The SGR receivers and the PIF receiver............................................................163
8.1  The SSTL receiver hardware .....................................................................163
8.2  SGR acquisition and tracking loops...........................................................169
8.3  PIF receiver hardware and frequency plan ................................................178
8.4  Correlator design for the PIF receiver .......................................................182
8.5  Processor design for the PIF receiver ........................................................185
9  Prototype receiver testing and results ................................................................190
9.1  AGC and GPS testing ................................................................................190
9.2  BOC measurements and testing.................................................................200
10  Single chip GPS and Giove-A receiver .........................................................207
10.1  Single chip receiver overview....................................................................207
10.2  RF front-ends for the single chip receiver .................................................210
10.3  Receiving the Galileo BOC(1,1) E1 signal................................................212
11  Discussion, conclusions and future work.......................................................218
11.1  Academic contributions .............................................................................218
11.2  Practical contributions ...............................................................................220
11.3  Future Work...............................................................................................221
References..................................................................................................................223
A  Tiered codes for GPS modernisation and Galileo..............................................A-1
B  Mathcad simulations of PSK and BOC .............................................................B-1
B.1  Received signal representations.................................................................B-1
B.2  Example simulation ...................................................................................B-2
C  Analogue and digital DLL formulas ..................................................................C-1
C.1  Introduction................................................................................................C-1
C.2  Linear system equivalent ...........................................................................C-4
C.3  Signal averaging.........................................................................................C-5
C.4  Digital loop analysis ..................................................................................C-5
C.5  Loop operation...........................................................................................C-7
C.6  Conversion from RF system ......................................................................C-8
C.7  Informal comparison with coherent DLL systems.....................................C-8
C.8  Comparison with digital loop.....................................................................C-9
C.9  Time estimate error from the SLL ...........................................................C-10
C.10  Loop operation.........................................................................................C-11
C.11  Symbol list for Appendix C.....................................................................C-13
D  Setting loop parameters in practice....................................................................D-1
E  Choosing a bump jumping threshold .................................................................E-1
F  Digital Noise Synthesis...................................................................................... F-1
F.1  Introduction................................................................................................ F-1
F.2  Adding noise .............................................................................................. F-2
F.3  Achieved C/N 0........................................................................................... F-4
F.4  Effective v. actual carrier to noise density ratio ........................................ F-5
F.5  Example implementation ........................................................................... F-5
F.6  Spectral analysis......................................................................................... F-6
F.7  PSK analysis .............................................................................................. F-7
F.8  Extension to BOC analysis ........................................................................ F-9
G  FPGA Correlator Registers ................................................................................G-1
H  Derivation of exact timing formulas for sine and cosine BOC..........................H-1
H.1  Direct analysis for sBOC(1,1)  pulse .........................................................H-1
H.2  Direct analysis for cBOC(1,1) ...................................................................H-2
I  AltBOC(15,10) lookup table............................................................................... I-1

biqwezsln

非常感谢

yxy7968

thanks so much

sunprotoss

thank you very much!

chujn

下来看看，谢谢。

gongping

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C.E.Shannon

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chnmy

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udine

回复 1# fei_yang


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hjgcqq123

谢谢分享！真的是本好书