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8 RTK Mapping Figure 8.2 Geoid-ellipsoid separation The differences between the geoid and ellipsoid result in a perceived degradation of accuracy between the GPS positions and the ‘known’ survey marks. The inaccuracies can be accommodated through a process called calibration. A calibration applies a least squares adjustment to derive a ‘best fit’, by moving the GPS-derived positions slightly to reflect the positions of the existing survey control more appropriately, as illustrated by Figure 8.3. This is achieved by observing or collecting GPS positions over known survey marks, then creating a local site using the GPS Pathfinder Office software. GPS Position Ellipsoidal Height Geoidal Separation Known Position Figure 8.3 Local site calibration schematic 194 TSC1 Asset Surveyor Operation Manual Orthometric (Geoidal) Height Ground Geoid Ellipsoid (Diagram not to scale)
RTK Mapping 8 Note – You cannot derive a Local Site Calibration using the Asset Surveyor software. For best results, assuming the control is free of errors, local control points should be evenly distributed over the data collection area as well as extending beyond the perimeter of the site. A minimum of three known points is recommended for a horizontal adjustment, while a minimum of four known points is recommended for a vertical adjustment. A local site is the result of plane and height adjustments. The plane adjustment consists of a rotation, translation, and scale change of the mapping plane. The height adjustment defines a plane that is inclined relative to the mapping plane. A mapping plane is an underlying coordinate system that already has defined datum and map projection parameters. Creating a local site is a simple way to compute the parameters (rotation, translation, and scale) associated with a plane adjustment for a localized area, or site. Vectors define the relative movements of positions for known coordinates. A least squares adjustment is then applied to the vectors to derive a best fit solution for the parameters of the plane adjustment. Some important points to remember when creating a local site are: A local site is created from a specific coordinate system and zone; it is linked permanently to that zone. Make sure that the current coordinate system and zone are the same as that of your existing database. A local site can only be created in terms of a cartesian coordinate system (that is, not from a latitude/longitude projection). This is because a local site is defined in linear units, such as meters, as opposed to non-linear units, such as degrees. TSC1 Asset Surveyor Operation Manual 195
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TSC1 Asset Surveyor Operation Manua
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Corporate Office Trimble Navigation
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Contents About This Manual 1 Quick
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Data Files . . . . . . . . . . . .
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7 Carrier Phase Data Collection Int
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B Pro XR System Introduction . . .
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Base Station Operation. . . . . . .
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Configuration for Use with the Asse
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About This Manual Welcome to the TS
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About This Manual Technical Assista
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1 Quick Setup In this chapter: ■
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1.2 Before Leaving the Office Quick
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1.5 Rover Configuration Quick Setup
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1.5.1 Data Collection Quick Setup 1
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1.6.1 Base Station Data Collection
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2 Introduction to the Asset Surveyo
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Introduction to the Asset Surveyor
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2.3 System Components 2.3.1 GPS Rec
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Introduction to the Asset Surveyor
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3 Introduction to the TSC1 Datalogg
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Function keys Backspace key Space k
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Introduction to the TSC1 Datalogger
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3.3.4 Menu Key 3.3.5 Next Key 3.3.6
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3.5.1 Choosing a PC Card 3.6 Reboot
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3.7 Data Capacity B Tip Introductio
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3.9.1 Battery Status Introduction t
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Introduction to the TSC1 Datalogger
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3.11Servicing Introduction to the T
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4 Before Leaving the Office In this
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Before Leaving the Office 4 The Qui
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4.3.1 Creating a Project Before Lea
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Before Leaving the Office 4 To star
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4.7 Data Files Before Leaving the O
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Before Leaving the Office 4 To ensu
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4.8 Data Transfer B Tip Before Leav
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4.8.2 Transferring Files to the TSC
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4.9 Configuring the System Before L
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B Tip Before Leaving the Office 4 T
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Table 4.2 Non-critical configuratio
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Table 4.3 Display configuration set
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5 In the Field In this chapter: ■
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In the Field 5 When you first start
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In the Field 5 If the Asset Surveyo
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In the Field 5 Note - The entire co
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In the Field 5 The skyplot is a gra
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In the Field 5 The Asset Surveyor s
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In the Field 5 You can perform a va
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Points Well sites Power poles Accid
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In the Field 5 Point features When
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In the Field 5 To segment a line fe
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In the Field 5 Reviewing features W
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B Tip In the Field 5 Repeating feat
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In the Field 5 To nest the updating
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In the Field 5 when driving along a
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B Tip In the Field 5 A line, area,
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B Tip In the Field 5 This form cont
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In the Field 5 When you have finish
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B Tip In the Field 5 The fields in
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In the Field 5 Feature icons Each e
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In the Field 5 Note - Changing a fe
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In the Field 5 You can use this for
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5.5.3 File Operations In the Field
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In the Field 5 To specify the filte
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In the Field 5 Searching In a large
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In the Field 5 Updating attributes
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In the Field 5 If a feature has alr
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5.5.5 Collecting New Features B Tip
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5.5.7 Exiting Data Update B Tip In
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The default mode is graphical. Use
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In the Field 5 In the Map display o
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5.6.4 Navigating Using the Map In t
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In the Field 5 When a feature’s l
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5.7 Navigating with the Asset Surve
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B Tip 5.7.2 Heading Lock In the Fie
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B Tip In the Field 5 Close-up scree
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5.7.5 Road Screen In the Field 5 Th
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5.7.6 Info Panels In the Field 5 In
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5.7.7 Waypoints In the Field 5 An A
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5.8 Managing Data Files C 5.8.1 Del
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5.8.3 Copying Files to and from the
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6 Back in the Office In this chapte
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Page 173 and 174: Back in the Office 6 6. In the list
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Page 179 and 180: Back in the Office 6 To export data
Page 181 and 182: 6.7 Batch Processor Back in the Off
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Page 185 and 186: 7.2.2 Planning Carrier Phase Data C
Page 187 and 188: Carrier Phase Data Collection 7 Tim
Page 189 and 190: Number of SVs 8 7 6 5 4 3 2 1 A Car
Page 191 and 192: Carrier Phase Data Collection 7 Alt
Page 193 and 194: 7.2.7 Postprocessing Carrier Phase
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Page 197 and 198: 7.4 In the Field Carrier Phase Data
Page 199 and 200: 7.4.2 Starting to Log Data Carrier
Page 201 and 202: 7.4.4 Logging Carrier Phase Data Ca
Page 203 and 204: Carrier Phase Data Collection 7 Ify
Page 205 and 206: 7.5 Back In the Office Carrier Phas
Page 207 and 208: 8 RTK Mapping In this chapter: ■
Page 209 and 210: RTK Mapping 8 While the RTK system
Page 211 and 212: RTK Mapping 8 The difference betwee
Page 213 and 214: C RTK Mapping 8 Warning - If you ar
Page 215: RTK Mapping 8 In the Asset Surveyor
Page 219 and 220: 8.2.5 Data Collection RTK Mapping 8
Page 221 and 222: RTK Mapping 8 Positions logged in R
Page 223 and 224: RTK Mapping 8 Selecting a site for
Page 225 and 226: 8.3.3 Radios C RTK Mapping 8 Trimbl
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Page 229 and 230: 8.3.5 Batteries RTK Mapping 8 The f
Page 231 and 232: SC1 datalogger TSC1 data cable PWR-
Page 233 and 234: RTK Mapping 8 4. Connect the radio
Page 235 and 236: RTK Mapping 8 2. Assemble and erect
Page 237 and 238: The Real-time output options form a
Page 239 and 240: RTK Mapping 8 To ensure RTK correct
Page 241 and 242: RTK Mapping 8 8.3.7 Setting up a Ro
Page 243 and 244: 8.4 In the Field RTK Mapping 8 Once
Page 245 and 246: RTK Mapping 8 Note - These port set
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Page 251 and 252: B Tip RTK Mapping 8 - Use Filter by
Page 253 and 254: A Pro XRS System In this chapter:
Page 255 and 256: Pro XRS System A A.4 Configuring th
Page 257 and 258: A.5.3 RTCM Output Pro XRS System A
Page 259 and 260: A.6 Cabling Diagram Pro XRS System
Page 261 and 262: Pro XRS System A A.8 Activating Sat
Page 263 and 264: C Warning - Make sure that the 24-d
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Pro XR System B B.4 Configuring the
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Pro XR System B If you require the
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B.6 Cabling Diagram Pro XR System B
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C ProXL System In this chapter: ■
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Pro XL System C C.5 Operational Asp
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C.6 Cabling Diagram Pro XL System C
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D Series 4000 In this chapter: ■
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Series 4000 D For Maxwell Technolog
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Series 4000 D If you have changed a
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Series 4000 D 3. Page through the v
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D.5.3 Overdetermined Positions Seri
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D.5.10 Receiver Outputs D.5.11 Velo
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D.7 Equipment List Series 4000 D Ta
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APPENDIX E E Site Surveyor 4400 Rec
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Site Surveyor 4400 Receiver E E.5 O
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E.5.7 Base Station Operation Site S
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E.7 Equipment List Site Surveyor 44
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F 4600LS Surveyor In this chapter:
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F.5 Operational Aspects Specific to
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F.5.6 Base Station Operation 4600LS
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4600LS Surveyor F Figure F.2 Two-po
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F.7 Equipment List 4600LS Surveyor
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G GPS Total Station 4700 In this ch
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GPS Total Station 4700 G G.5 Config
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G.6.6 Receiver Outputs GPS Total St
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G.8 Equipment List GPS Total Statio
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H GPS Total Station 4800 In this ch
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H.2 Switches and Indicator LEDs GPS
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H.4 Turning the Receiver On GPS Tot
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H.7.3 Real-Time Output GPS Total St
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H.9 Equipment List GPS Total Statio
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I Laser Rangefinders In this chapte
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Laser Rangefinders I Compass detail
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Laser Rangefinders I Cabling for th
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Laser Rangefinders I 2. Press the
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Laser Rangefinders I 5. Use the ←
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Laser Rangefinders I Entering a com
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Laser Rangefinders I I.2.5 Using th
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C Laser Rangefinders I Set the Type
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Laser Rangefinders I If you attempt
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B Tip Laser Rangefinders I 5. Press
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I.3 Laser Atlanta ProSurvey 1000 La
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Laser Rangefinders I Calibration of
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Laser Rangefinders I Select Externa
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Laser Rangefinders I Activating the
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C Laser Rangefinders I Checking the
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C Laser Rangefinders I Warning - Th
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I.4 Laser Atlanta Advantage Laser R
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Laser Rangefinders I Calibration of
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Laser Rangefinders I Configuring th
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Laser Rangefinders I If you attempt
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Laser Rangefinders I 3. Keeping a s
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I.4.5 Collecting Data The following
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Laser Rangefinders I Powering The L
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Laser Rangefinders I I.5.3 Configur
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Laser Rangefinders I You can press
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I.5.5 Collecting Data Laser Rangefi
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I.6.2 Accessories Laser Rangefinder
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I.7.2 Accessories Laser Rangefinder
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Laser Rangefinders I Testing When y
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J External Sensors In this chapter:
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External Sensors J You can configur
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3. Change the fields in this form a
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B Tip External Sensors J - After co
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J.3 Digital Cameras External Sensor
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3. Change the fields in this form a
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J.4 Echo Sounders External Sensors
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B Tip 3. Change the fields in this
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B Tip External Sensors J The Asset
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K NMEA Output Messages In this chap
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K.2 Common Message Elements NMEA Ou
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Longitude of ascension node Mean an
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NMEA Output Messages K Fields 3 to
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NMEA Output Messages K K.3.8 ZDA: U
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Index Symbols .ddf files 42 importi
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B back in the office 4, 141, 226 ba
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waypoints 68, 101, 135 in GPS Pathf
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File manager module 14, 137-140 fil
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I icons 97 update status 98 Import
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Info panels 133 proximity alarm 130
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echarging the TSC1 battery 32 recom
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statistics, on files 138 status bat
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Reader Comment Form TSC1 Asset Surv
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