PART3 » History » Version 29
Version 28 (COLIN, Tony, 03/20/2016 12:01 PM) → Version 29/83 (COLIN, Tony, 03/20/2016 01:16 PM)
h1. PART 5 : Implementation.
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p(. .......................
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h2. 1 - Starting point.
h3. .......
LabVIEW
GPS signal of sampling frequency 38.192 MHz from CD *[1]* under GNSS_signal_records/GPSdata-DiscreteComponents-fs38_192-if9_55.bin
C/A code generation : _CA_code.vi_ with subVI _CA_generatorG1.vi_ _CA_generatorG2.vi_
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h2. 2 - Acquisition.
h3. .......
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h2. 3 - Tracking.
h3. .......
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h2. 4 - Navigation Data decoding.
*See the UML Diagram of Section 4 under :* attachment:"NavigationData.PNG".
h3. a - Delimiting Delimit subframes.
The files involved are : TestFindPreamble.vi
- _FindPreamble.vi_ GenerateFrame.vi
- _TestFindPreamble.vi_ FindPreamble.vi
- _GenerateFrame.vi_
- _ParityCheck.vi_ ParityCheck.vi
p=. !Preamble1.PNG! !Preamble2.PNG!
p((((. *Figure 5. :* Cross-correlation between navigation frame and local preamble. *Figure 5. :* Subframes with index of delimitation.
h3. b- Decoding Decode ephemeris and information within the frame.
The files involved are : Ephemeris.vi
- _Ephemeris.vi_ BinaryArrayToDecimal.vi
- _BinaryArrayToDecimal.vi_
- _twosComp2dec.vi_
- _ParityCheck.vi_ twosComp2dec.vi
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h2. 5 - Localization computation.
*See the UML Diagram of Section 5 under :* attachment:"Localization.PNG"
h3. Satellite position.
SatellitePosition.vi
TestSatellitePosition.vi
Check_time.vi
p=. !SatPos.PNG!
*Figure 5. :* Interface with ephemeris as input and illustration of the satellite position.
h3. Pseudoranges.
PseudorangesComputation.vi
h3. Least Square solution for position determination.
LeastSquarePosition.vi
SatelliteRotationECEF.vi
toTopocentric.vi
CartesianToGeodetic.vi
TroposphericCorrection.vi
h2. 6 - Complete UML Diagram of the receiver.
!UMLDiagram.png!
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*References :*
*[1]* K. Borre, D. M. Akos, N. Bertelsen, P. Rinder, S. H. Jensen, A software-defined GPS and GALILEO receiver
{{toc}}
p(. .......................
---
h2. 1 - Starting point.
h3. .......
LabVIEW
GPS signal of sampling frequency 38.192 MHz from CD *[1]* under GNSS_signal_records/GPSdata-DiscreteComponents-fs38_192-if9_55.bin
C/A code generation : _CA_code.vi_ with subVI _CA_generatorG1.vi_ _CA_generatorG2.vi_
---
h2. 2 - Acquisition.
h3. .......
...........
---
h2. 3 - Tracking.
h3. .......
...........
---
h2. 4 - Navigation Data decoding.
*See the UML Diagram of Section 4 under :* attachment:"NavigationData.PNG".
h3. a - Delimiting Delimit subframes.
The files involved are : TestFindPreamble.vi
- _FindPreamble.vi_ GenerateFrame.vi
- _TestFindPreamble.vi_ FindPreamble.vi
- _GenerateFrame.vi_
- _ParityCheck.vi_ ParityCheck.vi
p=. !Preamble1.PNG! !Preamble2.PNG!
p((((. *Figure 5. :* Cross-correlation between navigation frame and local preamble. *Figure 5. :* Subframes with index of delimitation.
h3. b- Decoding Decode ephemeris and information within the frame.
The files involved are : Ephemeris.vi
- _Ephemeris.vi_ BinaryArrayToDecimal.vi
- _BinaryArrayToDecimal.vi_
- _twosComp2dec.vi_
- _ParityCheck.vi_ twosComp2dec.vi
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h2. 5 - Localization computation.
*See the UML Diagram of Section 5 under :* attachment:"Localization.PNG"
h3. Satellite position.
SatellitePosition.vi
TestSatellitePosition.vi
Check_time.vi
p=. !SatPos.PNG!
*Figure 5. :* Interface with ephemeris as input and illustration of the satellite position.
h3. Pseudoranges.
PseudorangesComputation.vi
h3. Least Square solution for position determination.
LeastSquarePosition.vi
SatelliteRotationECEF.vi
toTopocentric.vi
CartesianToGeodetic.vi
TroposphericCorrection.vi
h2. 6 - Complete UML Diagram of the receiver.
!UMLDiagram.png!
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*References :*
*[1]* K. Borre, D. M. Akos, N. Bertelsen, P. Rinder, S. H. Jensen, A software-defined GPS and GALILEO receiver