1 / 17

M.Sc. in Advanced Communication and Navigation Satellite Systems

M.Sc. in Advanced Communication and Navigation Satellite Systems. Chapter of Rome. AFCEA’s International Student Conference 2009. SDR GNSS Receiver Acquisition Module LabVIEW Implementation. Lt. Pasquale Digregorio. Brussels, October 28 2009. SUMMARY. SUMMARY.

lapis
Download Presentation

M.Sc. in Advanced Communication and Navigation Satellite Systems

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. M.Sc. in Advanced Communication and Navigation Satellite Systems Chapter of Rome AFCEA’s International Student Conference 2009 SDR GNSS Receiver Acquisition Module LabVIEW Implementation Lt. Pasquale Digregorio Brussels, October 28 2009

  2. SUMMARY SUMMARY M.Sc. in AdvancedCommunication and Navigation Satellite Systems 2 • Introduction : Workgroup • GNSS Ricever : Hw-based vs Sw-based • Acquisition Module : Hw e Sw approach • LabView : implementation • Results : real GPS signal acquisition • Conclusions

  3. Workinggroup GNSS Receiver Acquisition Module LabView Implementation Conclusions WORKING GROUP M.Sc. in AdvancedCommunication and Navigation Satellite Systems 3 • Cpt. Francesco Bartolozzi • Cpt. Alberto De Sanctis • Gabriele Mariani • Lt. Efer Miotti Results

  4. GNSS RECEVER Acquisition Acquisition Tracking Tracking A/D converter RF to IF converter RF to IF converter GNSS Receiver AcquisitionModule LabView Implementation Conclusions SUMMARY M.Sc. in AdvancedCommunication and Navigation Satellite Systems 4 4 Observables Navigation Data Code-phase Delta Doppler Antenna GNSS PVT Navigation Interoperability Re-configurability Portability SOFTWARE HARDWARE Observables Navigation Data Code-phase Delta Doppler Antenna GNSS PVT A/D converter Acquisition Navigation HARDWARE SOFTWARE Workinggroup Results

  5. ACQUISITION PROCESS Search in 3 dimention space: Satellite in view (PRN code) Delta Doppler Code-phase ∆t GNSS Receiver AcquisitionModule LabView Implementation Conclusions SUMMARY M.Sc. in AdvancedCommunication and Navigation Satellite Systems 5 5 GPS SiS GPS Signal at the receiver Reciver Local Code Shifted local code GPS SiS reachs the reciver after dt delay Code-phase GPS signal Local Code Workinggroup Results

  6. ACQUISITION PROCESS GNSS Receiver AcquisitionModule LabView Implementation Conclusions SUMMARY ∆τ = 1/fc ≈ 1μs M.Sc. in AdvancedCommunication and Navigation Satellite Systems 6 6 Search Space Fase Codice PRN ±10 KHz ∆f = 500 Hz 1023 Chip Freq. Doppler Workinggroup Results

  7. ACQUISITION PROCESS GNSS Receiver AcquisitionModule LabView Implementation Conclusions SUMMARY MODULO ACQUISIZIONE ∆τ = 1/fc ≈ 1μs M.Sc. in AdvancedCommunication and Navigation Satellite Systems 7 7 Hw-Based PRN code phase ±10 KHz ∆f = 500 Hz 1023 Chip Freq. Doppler Workinggroup Results

  8. ACQUISITION PROCESS GNSS Receiver AcquisitionModule LabView Implementation Conclusions MODULO ACQUISIZIONE SUMMARY ∆τ = 1/fc ≈ 1μs M.Sc. in AdvancedCommunication and Navigation Satellite Systems 8 8 Sw-Based PRN code phase ±10 KHz ∆f = 500 Hz 1023 Chip Freq. Doppler Workinggroup Results

  9. LABVIEW IMPLEMENT. GNSS Receiver Acquisition Module LabView Implementation Conclusions MODULO ACQUISIZIONE SUMMARY M.Sc. in AdvancedCommunication and Navigation Satellite Systems 9 9 Computational issues • Fast Fourier Transform Parallel Code Phase Search Acquisition Algorithm with high computing efficiency • Parametric Acquisition Configurable time and frequency bin size Trade-off : accuracy and sensitivity versus computational weight Workinggroup Results

  10. LABVIEW IMPLEMENT. GNSS Receiver Acquisition Module LabView Implementation Conclusions MODULO ACQUISIZIONE SUMMARY M.Sc. in AdvancedCommunication and Navigation Satellite Systems 10 10 Acquisition Module Workinggroup Results

  11. LABVIEW IMPLEMENT. GNSS Receiver Acquisition Module LabView Implementation Conclusions MODULO ACQUISIZIONE SUMMARY M.Sc. in AdvancedCommunication and Navigation Satellite Systems 11 11 Parametric GUI Workinggroup Results

  12. RESULTS GNSS Receiver Acquisition Module LabView Implementation Conclusions MODULO ACQUISIZIONE SUMMARY M.Sc. in AdvancedCommunication and Navigation Satellite Systems 12 12 SV N°22 SV N°2 Workinggroup Results

  13. RESULTS GNSS Receiver Acquisition Module LabView Implementation Conclusions MODULO ACQUISIZIONE SUMMARY M.Sc. in AdvancedCommunication and Navigation Satellite Systems 13 13 Acquired SV Workinggroup Results

  14. RESULTS GNSS Receiver Acquisition Module LabView Implementation Conclusions MODULO ACQUISIZIONE SUMMARY M.Sc. in AdvancedCommunication and Navigation Satellite Systems 14 14 SV dynamic Workinggroup Results

  15. CONCLUSIONS GNSS Receiver Acquisition Module LabView Implementation Conclusions MODULO ACQUISIZIONE SUMMARY M.Sc. in AdvancedCommunication and Navigation Satellite Systems 15 15 Workinggroup Results

  16. CONCLUSIONS GNSS Receiver Acquisition Module LabView Implementation Conclusions MODULO ACQUISIZIONE SUMMARY M.Sc. in AdvancedCommunication and Navigation Satellite Systems 16 16 Goals achieved: • Implemented PRN Code generator (test gold sequence properties) • Acquisition module (Parametric function, FFT) (testing with a Real digital GPS signal) Future development: • Tracking module • Navigation solution module Workinggroup Results

  17. Thank you very much for your attention! QUESTIONS? Lt. Pasquale Digregorio Brussels, October 28 2009

More Related