training and presentation field training. contents brief overview of gnss overview of the...
TRANSCRIPT
Training and Presentation
Field Training
Contents
Brief overview of GNSS Overview of the Terralite constellation Terralite constellation Hardware Firmware Versions Software Overview Trouble shooting
Brief overview of GNSS
– Overview of GPS– Ranges– Timing– Timing Errors– Geometry– Atmospheric Conditions– RTK– Satellite constellations
Overview of GPS
Global Positioning System (GPS) Trimble Tutorial on GPS
(http://www.trimble.com/gps/howgps.shtml)
A minimum of 4 satellites are required to provide a unique solution
Ranges
We do know the Velocity of the Satellites signals
To get the time travelled we need to synchronize the clock in our receiver on the ground with the clocks in the Satellites.
Thus satellite positioning is based on clocks!
Timing
To get perfect synchronisation we can use an additional satellite signal.
Thus we need a minimum of five satellites for the initial position solution.
Timing Errors
Despite having perfect synchronisation there are still some errors that affect the accuracy.
Geometry
Poor Geometry Good Geometry
Atmospheric Conditions
Relatively close locations have similar atmospheric conditions
RTK
Corrections for the Satellite are sent to the GNSS Receivers
Satellite constellations
GPS - US system Glonass - Russian system Galileo - European Union system Compass - Chinese system QZSS - Japanese system
Terralite constellation Overview
Terralite constellation
Augmentation
The Matrix above shows the minimum number of signals required for a solution
Manual 602-0077-02-A Page 41
Terralite constellation designs
There are three Constellation designs
Basic Standard Network
Manual 602-0077-02-A Page 10
Basic Constellation
Manual 602-0077-02-A Page 61
Standard Constellation
Manual 602-0077-02-A Page 63
Network Constellation
Manual 602-0077-02-A Page 65
Hardware
IX100G
Reference Station/Integrity Monitor (Base Station)
Provides a corrections
to enable High Precision
positionsManual 602-0077-02-A Page 25
TX100
XPS transmitter
Provides XPS signals which are used by the Reference station and the Receivers for High Precision positioning.
Manual 602-0077-02-A Page 23
MX100G
GNSS + XPS enabled receivers
Provides High Precision positions for machine control
Manual 602-0266-01-A Page 20
AX100G
Antenna capable of receiving GNSS and XPS Signals
Manual 602-0266-01-A Page 22
Connectors
RED – XPS Orange – Power Yellow – GPS
DO NOT CROSS CABLES
Red to Red Orange to Orange Yellow to Yellow
Front Panel (MX & IX)
RX - indicates the radio modem is receiving data over its radio link. TX - indicates that the internal computer is transmitting to the radio modem. NSV - blinks indicating the total number of satellites and Terralites tracked. FIX - The Base station will never be in FIX ATT - is not used on the IX100 Receiver. BOK - indicates the currently received IX100 Reference Station/Integrity
Monitor state of health PPS - indicates when PPS signal is valid PWR - indicates that the power is on
Firmware Versions
Firmware 3.1
Capabilities
Baseline software runs on new hardware: MX100G, IX100G
GLONASS (with Reference)
Supports up to 8 Terralites
Firmware 3.2
Capabilities
Baseline software runs on new hardware: MX100G, IX100G
GLONASS (with Reference) Supports up to 8 Terralites Split Reference Multi Pit XPS
Software Overview
Home Screen – MX100G
Home Screen – IX100G
Manual 602-0077-02-A Page 83
Home Screen – TX100
Manual 602-0077-02-A Page 123
Diagnostics Menu
MX100G, IX100G and TX100 Signal View Boot Log Event Log Sensor Log CPU Uptime RTK Uptime MX100G and IX100G Terralite Survey Status IX100G RTK Subscriber List
Signal View – Position (MX100G)
The Signal View screen provides more in depth information on the health of the unit.The PositionCoordinates portion shows:Latitude of the unit in decimal degrees.Longitude of the unit in decimal degrees.Height of the unit - Ellipsoidal HeightPositioning Mode – Hybrid fine, Hybrid course, GPS fixed, GPS float, AutonomousRTK Age (Sec) -The amount of time in Seconds since the last Correction was receivedPDOP – the geometry of the of the signal sources.
Signal View – Terralites (MX100G)
SLT is the slot number observed. Each Terralite has a unique slot number.XPS SS is the signal strength of the XPS signal, a value of more than 102 is required.XPS AG is the Auto Gain, a value of more than 100 is required. REF SS/AG is the signal strength and Auto Gain being observed by the reference station.The Sky plot shows you the position of Terralites (Green) and satellites (Blue) with respect to the unit you are logged onto.Bold numbers in the SLT column are used in the position solution.
Signal View – Satellites (MX100G)
L1 Greater than 10 L2 Greater than 5
Bold Numbers are Signals being used
Signal View – Receiver Status (MX100G, IX100G)
MXG’s and IXG’s operate at 10-14 vdc but can accept inputs of 10 – 34 vdc
RCORate ± 3.0
Operating Temperature -20º C to +60º C
Signal View – Position (TX100)
The Signal View screen provides more in depth information on the health of the unit.The Position Coordinates portion shows:Latitude of the unit in decimal degrees.Longitude of the unit in decimal degrees.Height of the unit - Ellipsoidal HeightPositioning Mode – GPS fixed, GPS float, AutonomousRTK Age (Sec) -The amount of time in Seconds since the last Correction was receivedPDOP – the geometry of the of the signal sources.
Signal View – Terralites (TX100)
Terralites do not track Terralites SS values should be greater than 102 AG values should be greater than 100
Manual 602-0077-02-A Page 126
Signal View – Satellites (TX100)
L1 Greater than 10
L2 Greater than 5
Bold Numbers are
Signals being used
Manual 602-0077-02-A Page 128
Signal View – Receiver Status (TX100)
TX100 operate at 10-34 vdc but can accept inputs of 10 – 34 vdc
RCORate of 299.7 ± 3 are good
Signal View – Position (IX100)
The Signal View screen provides more in depth information on the health of the unit.The Position Coordinates portion shows:Latitude of the unit in decimal degrees.Longitude of the unit in decimal degrees.Height of the unit - Ellipsoidal HeightPositioning Mode –will always be AutonomousPDOP – the geometry of the of the signal sources.
Manual 602-0077-02-A Page 85
Signal View – Terralites (IX100)
Terralites do not track Terralites SS values should be greater than 102 AG values should be greater than 100
Manual 602-0077-02-A Page 85
Signal View – Satellites (IX100)
L1 Greater than 10
L2 Greater than 5
Bold Numbers are
Signals being used
Manual 602-0077-02-A Page 87
Signal View – Receiver Status (IX100G)
The RCORate should be within ± 3.0
Manual 602-0077-02-A Page 87
Boot Log
Shows status of current boot.Six stages in the boot sequenceShould show UP AND RUNNING
If any of the stages failure contact your Trimble representative.
Manual 602-0077-02-A Page 89, 128
Event Log
Manual 602-0077-02-A Page 90, 130
CPU Uptime
CPU Uptime shows the amount of time the unit has been operational.
Manual 602-0077-02-A Page 92, 132
RTK Uptime
RTK Uptime shows how long RTK has been working
It also shows the modes and percentages
for this session. Manual 602-0077-02-A Page 93, 134
Sensor Log
The Temperature and VoltageAre recorded in a single file.
Logs are written daily and different months can be selected by using the drop down menu
Manual 602-0077-02-A Page 91, 131
Terralite Survey Status
Terralites need to have been
Surveyed in order to be used.
Manual 602-0077-02-A Page 94
TL Network Select
Manual 602-0077-02-A Page 95
RTK Packet StatsIndicates when the last packet was received and the source of the Packet
Packet Throughput shows the Source of the Packets, The total number of packets received and the throughput percentage.
Packet Latency Count shows the number and Source as well as destination of packets. It also shows the amount of time between receiving packets.
Manual 602-0077-02-A Page 136
RTK Subscribers List (IX)
The subscription list only applies when using subscription mode for Differential Correction.
It shows the IP address and the Subscription Time
Manual 602-0266-01-A Page 96
Configuration Menu MX100, IX100 and TX100 Config File IP Address Diff Correction XPS Network ID Network Select XPS Aided Search Data Logging Elevation Mask PDOP Mask Site & Machine IX100 only Reference Position
Configuration File
The configuration file contains the current settings.
Manual 602-0266-01-A Page 99, 140
Configuration uploading
Save Button Will allow you to save the current configuration file from the unit to your computer.
Upload Button Browse to the location of the configuration file you wish to load onto the unit with the browse button. Then press the Upload button to send it.
Revert to Factory defaults Press this button if you wish to set the unit back to factory defaults. Remember this will rest ALL of the values. You will most likely need to change your IP settings after reverting the configuration.
Network IP Address
The network communications setting will be provided by the sites IT department.
For IP based communications you will need an IP Address, Subnet Mask and Default Gateway
Manual 602-0266-01-A Page 102, 142
Transmitter Slot (TX only)
Each Terralite has a unique slot number. The transmitter slot needs to be enabled in
order to transmit XPS signals.
Manual 602-0266-01-A Page 149
FCC License (TX only)
In side United States you will enter the FCC license number here
Outside the US this setting is not required
Manual 602-0266-01-A Page 150
Differential Correction
Sets the source of the RTK corrections.
Supported modes are Subscription, Multicast and Unicast
Multiple XPS networks are also supported.
Manual 602-0266-01-A Page 143, 145
Differential Correction - IX
Sets the method for sending RTK corrections Manual 602-0266-01-A Page 103
Position Output
The position output is used to interface with the vendors software. This information is supplied by the vendor
Manual 602-0266-01-A Page 105
Position Output (Submit Changes) (MX ) Select Restart RTK for the changes to take
effect
XPS Network ID (MX, TX and IX)
This option is to select the XPS Network that the unit will participate in. If the wrong option is selected the unit will not be able to function in the appropriate network.
Manual 602-0266-01-A Page 104, 147
Network Select
The Network Select Parameters are for multiple XPS network sites
Manual 602-0266-01-A Page 98
XPS Aided Search
The XPS Aided Search is used for multiple XPS network sites
Data Logging (MX, TX and IX)
Recording the NMEA string is useful for diagnostics by Trimble Engineers
Manual 602-0266-01-A Page 108,154
Elevation Mask (MX, TX and IX)
The elevation mask is the cut off angle for satellites. Any Satellite lower than the mask will not be used.
Manual 602-0266-01-A Page 108, 154
PDOP Mask (MX, TX and IX)
Position Dilution of Precision. The lower the value the better. A large PDOP will mean a lesser solution. Setting the PDOP mask rejects solutions above that value.
Manual 602-0266-01-A Page 109, 155
Reference Position (IX Only)
The surveyed position of the base is very important. Ensure you enter the correct coordinates and verify
this via a survey.
Manual 602-0266-01-A Page 110
Site and Machine ( MX,TX, IX)
Used to Identify the unit when you have logged in.
Manual 602-0266-01-A Page 111, 156
Firmware
Firmware (MX, TX and IX)
This screen is for uploading firmware via the IP network.
Manual 602-0266-01-A Page 113, 158
Firmware File Location
Clicking the browse button brings up the navigation window. This is used to locate the firmware file to upgrade.
Firmware Uploading Status
Uploading NVT_bunble-r3_2.nvt… Please wait
Firmware Installation Status
Bundle uploaded successfully. Fri Aug 12 04:05:53 2011 File uploaded successfully: nvt_bundle-r3_2.nvt (3499130 bytes)
Installing… Please wait
Firmware Installation Success
The installation completed successfully and a reboot is required.
Firmware Installation Reboot
After clicking the reboot button this screen appears. A count down is performed. When the counter reaches zero the unit will have rebooted
Firmware Revert Option
Should a user need to revert to a previous version of firmware this can be done by clicking on the Revert and Reboot button. Revert is not available on brand new units.
Firmware Revert Confirmation
A warning message is displayed to ensure that you do want to revert to the previous firmware. Cancelling will result in the continued use of current firmware version
Utilities
Reboot Me
After clicking the reboot button this screen appears. A count down is performed. When the counter reaches zero the unit will have rebooted.
Manual 602-0077-02-A Page 115, 160
User Login Password
The User Login Password screen is used to change the user password.
Enter the new password and then Retype it to confirm it.
Manual 602-0266-01-A Page 115, 161
User Login Password Completion
Ping Network Host
The Ping Network Host allows the user to send icmp packets to another host. This will check on the network between the two units.
Manual 602-0266-01-A Page 116, 162
Ping Network Host Results
Below is the information from the ping test
Network Test
This is a an automatic ping net work host test
Manual 602-0266-01-A Page 117, 163
Network Test confirmation
Confirmation of the parameters set.
Network Test – Event Log Output
If no response is received then an event is recorded in the event log.
NMEA Ping File
Manual 602-0266-01-A Page 104, 164
USB Dive Utilities
Firmware Load USB Drive Preparation The Install bundle needs to be in the root
directory as does the USB script
USB Firmware LoadTurn off receiverPlug in the Trimble USB adapter cable (201-0260-01) to the cable end labeled USB2.Insert the prepared USB drive to the adapter cable.Turn on the receiver. The following process should be given at least two minutes to complete
0:30-The LED on the USB drive will blink for the first time 0:40-You will hear three beeps to indicate the upgrade process has started 1:40-You will hear the “Shave-and-a-Haircut” sequence indicating programming
has completed.Turn off the receiverUNPLUG the USB drive and adapter cableTurn on the receiver. The following process should be allowed at least four minutes to complete
1:15-You will hear one series of fast beeps indicating the atmel device is being programmed.
2:05-You will hear two series of fast beeps indicating the FPGA is being programmed.
3:20-You will hear the “Shave-and-a-Haircut” sequence indicating programming has completed.
The unit should be up and operating correctly at this stage.
USB Reset IP Address Preparation
The default IP folder need to be in the root folder of the USB drive.
The USB Script needs to be in the root folder of the USB drive.
The default IP Address is 192.168.117.220
USB Default IP Process
Turn off receiver Plug in the Trimble USB adapter cable in to the cable end labeled USB2. Insert the prepared USB drive to the adapter cable. Turn on the receiver. The following process should be given at least
two minutes to complete 0:30-The LED on the UBS drive will blink for the first time 0:40-You will hear three beeps to indicate the upgrade process
has started 1:00-You will hear the “Shave-and-a-Haircut” sequence
indicating programming has completed. Turn off the receiver UNPLUG the USB drive and adapter cable Turn on the receiver. The unit should be up and operating correctly at
this stage.
Troubleshooting
Autonomous Mode
Insufficient Signals Quality Signals Network communications
Float Mode
Insufficient signals Quality of Signals PDOP Network Communications
Connecting mode
Poor communications Not connected to an AX100G Insufficient signals Rtk stopped Configuration
Not Using Terralites
The antennas are above or similar height to the Terralites.
Quality of signal at Receiver Quality of Signal at XPS Reference Station Radio Communications Numbers of Terralites Geometry
Trouble Shooting with Signal View
Signal view can be used to determine if problems are caused by.
Insufficient Signals Quality of Signals PDOP Poor communications
Insufficient Signals
To few Terralites
To few Satellites if not
Using Terralites
Quality of Signals
Weak XPS signals
Weak and missing
L2 Signals
PDOP
High PDOP values Will result in a low
precision solution.
Network Communications
Communication Checks
Configuration
Signal View setting in the configuration file determines how signal view is viewed. An incorrect setting will result in Connecting mode. The values shown are the default values.
MX100G TX100 IX100G
IP Address IP Address IP Address
Differential Correction Differential Correction Differential Correction
Position Output Slot Number Reference Position
XPS Network XPS Network XPS Network – XPS Base only
Loss of XPS or GPS Signals
Check antenna
Swap all three cables from
receiver1 with receiver2
Problem moves to
other receiver YesNo
Replace the receiver
Next
Page
This procedure is valid for any one or all signals
Cable Swap Test
Do the cable swap from R1 to R2 and R2 to R1
Cable Swap Results 1
After the swap the problem moves to R2
Cable Swap Results 2
The problem stays with R1 and R2 is OK.
Antenna check
No Antenna
working
Replace antenna
Yes
Repair / replace
Cables
One Receiver in Autonomous Mode
Here R1 is in Autonomous Mode while R2 is in Hybrid Fine
No RTK messages and Network connectivity 1
Connect known working
Ethernet cable to
receiver and laptop
Disconnect Ethernet cable from
The switch and connect to laptop
Able to connect
to receiverNoYes
Contact IS department to
check switch and/or radio
Able to
Connect
No
YesReplace Ethernet
cable
Proceed to
next page
No RTK messages and Network connectivity 2
Unable to communicate
with direct connect
Reset the receiver IP
with the USB utility
Communication
restoredYes No
Reconfigure receivers
Network settings
Replace
MX-100 receiver
Both Receivers in Autonomous Mode
Here R1 and R2 are both in Autonomous Mode