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1. Do You Really Know Where You Are? |
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2. How Active Is Your Map? |
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3. Levels of GPS-GIS Integration. |
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2. GIS. |
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4.3. Attribute Information. |
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5. Spatial and Geographical Data. |
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5.1. Spatial Referencing. |
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6. Spatial Data Modelling. |
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7. Spatial Data Visualization. |
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9. The Application of GIS. |
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9.1. Example GIS Applications. |
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2. The Pseudorange Observable. |
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2.2. Autocorrelation Technique. |
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2.3. Pseudorange Observation Equations. |
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3. Point Positioning Using Pseudorange. |
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3.1. Least Squares Estimation. |
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4. The Carrier Phase Observable. |
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4.2. Carrier Phase Observation Model. |
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4.3. Differencing Techniques. |
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5. Relative Positioning Using Carrier Phase. |
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5.1. Selection of Observations. |
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5.2. Baseline Solution Using Double Differences. |
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6. Introducing High Precision GPS Geodesy. |
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6.1. High Precision Software. |
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6.2. Sources of Data and Information. |
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3 Datum Transformations and Projections. |
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1. Integration Requirements. |
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2. Global Reference Systems. |
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2.1. WGS-84 Cartesian Coordinates. |
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2.2. International Terrestrial Reference System (ITRS). |
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2.3. WGS-84 Ellipsoidal Coordinates. |
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2.4. Cartesian to Ellipsoidal Transformation. |
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2.5. Ellipsoidal to Cartesian Transformation. |
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2.6. Relative Coordinates: Cartesian to Topocentric. |
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2.7. GPS Estimated Errors: Cartesian to Topocentric. |
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2.8. Dilution of Precision. |
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3. Regional Reference Systems. |
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3.1. Regional Ellipsoidal Coordinates. |
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3.3. Converting Latitude and Longitude to UTM. |
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3.4. Orthometric Height ‘Above Sea Level’. |
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4 Commercial Applications That Integrate GIS and GPS. |
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2. National GIS/GPS Integration Team. |
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3. GIS and GPS Deformation Monitoring. |
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4. Location Based Services. |
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5. Intelligent Transport Systems. |
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6. Accessible Rural Public Transport (Case Study). |
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6.2. Integrated Rural Transport. |
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6.3. Route Tracking System. |
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7. Realtime Passenger Information and Bus Priority System. |
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9.1. Shallow Integration. |
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5 GPS-GIS Map Matching: Combined Positioning Solution. |
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2. Map-Matching Methodologies. |
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3. Road Reduction Filter (RRF) Map-Matching Algorithm. |
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3.3. Determining the Correct Road Centre-line. |
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4.1. Testing Methodology. |
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6 Intelligent Map Matching Using ‘Mapping Dilution of Precision’ (MDOP). |
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2. Least Squares Estimation of Position Error Vector. |
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3. Quantifying Road Geometry: Mapping Dilution of Precision (MDOP). |
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4. MDOP for Basic Road Shapes. |
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6. RRF Map-Matching Enhancement. |
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7 The Use of Digital Terrain Models to Aid GPS Vehicle Navigation. |
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2. Digital Terrain Models. |
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3. Spatial Interpolation of Elevation Data. |
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3.1. Patchwise Polynomial Interpolation. |
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3.2. Bicubic Interpolation. |
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3.3. Biquintic Interpolation. |
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4. Map Matching and the Road Reduction Filter. |
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4.1. Road Reduction Filter (RRF). |
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5. Data Collection and Processing. |
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5.1. Accuracy of Solution. |
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6.1. Height Errors – Test 1. |
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6.2. Position Errors – Test 1. |
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7. Results from Test 2 Data with a Subset of Satellites. |
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7.1. Position Error – Test 2. |
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8 GPS Accuracy Estimation Using Map-Matching Techniques: Application to Vehicle Positioning and Odometer Calibration. |
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4. Distance Correction Factor. |
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5.1. Weighting Scheme for w<sub>i</sub>. |
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5.2. Implementing the Correction Factor Algorithm. |
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6. Calibration if GPS Data Is Recently Online. |
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7. Putting it all Together. |
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8. Alterations to the Correction Factor Algorithm. |
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11. Data Processing and Results. |
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Algorithm 1 Estimate Location of Bus from Odometer Signal. |
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Algorithm 2 ‘Distance3d’ Function Used by Algorithm 4. |
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Algorithm 3 Update the Value of C<sub>t</sub>. |
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Algorithm 4 Update the Value of C. |
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Algorithm 6 Overview of Events. |
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Modification of Algorithm 6. |
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