A Software-Defined GPS and Galileo Receiver: A by Kai Borre, Dennis M. Akos, Nicolaj Bertelsen, Peter Rinder, PDF

By Kai Borre, Dennis M. Akos, Nicolaj Bertelsen, Peter Rinder, Søren Holdt Jensen

ISBN-10: 0817639241

ISBN-13: 9780817639242

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ISBN-13: 9780817639594

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A good written publication. Excessively concise. an excessive amount of fabric at the RF Front-end, whilst the most expectable concentration could be the base-band. The ebook does, despite the fact that, serve its function good.

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Additional info for A Software-Defined GPS and Galileo Receiver: A Single-Frequency Approach (Applied and Numerical Harmonic Analysis)

Sample text

The Fourier transform of x δ (t) is ∞ X δ ( f ) = fs X ( f − n fs ). 8 show the sampling process in the time and frequency domain, respectively. 8 reveals that if the sampling rate f s is lower that 2B, then the frequency-shifted components of X ( f ) overlap and the spectrum of the sampled signal is not similar to the spectrum of the original signal x(t). The spectral overlap effect is known as aliasing, and the sampling rate f s = 2B is called the Nyquist rate. , f s > 2B. We return to the issue of sampling in Chapter 4.

Satellite ID number GPS PRN signal number 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 — — — — — 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 Code phase selection G2 Code delay chips First 10 chips octal ⊕ ⊕ ⊕ ⊕ ⊕ ⊕ ⊕ ⊕ ⊕ ⊕ ⊕ ⊕ ⊕ ⊕ ⊕ ⊕ ⊕ ⊕ ⊕ ⊕ ⊕ ⊕ ⊕ ⊕ ⊕ ⊕ ⊕ ⊕ ⊕ ⊕ ⊕ ⊕ ⊕ ⊕ ⊕ ⊕ ⊕ 5 6 7 8 17 18 139 140 141 251 252 254 255 256 257 258 469 470 471 472 473 474 509 512 513 514 515 516 859 860 861 862 863 950 947 948 950 1440 1620 1710 1744 1133 1455 1131 1454 1626 1504 1642 1750 1764 1772 1775 1776 1156 1467 1633 1715 1746 1763 1063 1706 1743 1761 1770 1774 1127 1453 1625 1712 1745 1713 1134 1456 1713 2 3 4 5 1 2 1 2 3 2 3 5 6 7 8 9 1 2 3 4 5 6 1 4 5 6 7 8 1 2 3 4 5 4 1 2 4 6 7 8 9 9 10 8 9 10 3 4 6 7 8 9 10 4 5 6 7 8 9 3 6 7 8 9 10 6 7 8 9 10 10 7 8 10 24 2.

That is, there is a 90◦ phase shift between the two codes. We return to this issue shortly. After the P(Y) part is attenuated 3 dB, these two L1 signals are added to form the resulting L1 signal. The so-called standard positioning service (SPS) is based on C/A code signals alone. 3) where PC , PPL1 , and PPL2 are the powers of signals with C/A or P code, C k is the C/A code sequence assigned to satellite number k, P k is the P(Y) code sequence assigned to satellite number k, D k is the navigation data sequence, and f L1 and f L2 are the carrier frequencies of L1 and L2, respectively.

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A Software-Defined GPS and Galileo Receiver: A Single-Frequency Approach (Applied and Numerical Harmonic Analysis) by Kai Borre, Dennis M. Akos, Nicolaj Bertelsen, Peter Rinder, Søren Holdt Jensen


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