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Guidelines for Real-Time Kinematic (RTK) Surveying

Over the past decade Real Time Kinematic, RTK surveying  with Global Navigation Satellite Systems (GNSS) has become common practice in geomatics.RTK Surveying with Global Navigation Satellite Systems (GNSS)

RTK surveying is a relative positioning technique which measures positions using two GNSS antennas in real time. One is setup on a static point with fixed coordinates and is known as the base station. It uses a high frequency radio to transmit its raw observations to the second unit (known as the rover) and then the rover uses both observations to compute a position relative to the base location in real-time. RTK surveying requires reliable communication between base and rover units and works best with short baselines as the precision of RTK measurements decreases as the baseline length increases.

Guidelines for Real-Time Kinematic – RTK Surveying

Real Time Networks have been developed as a method of extending range limitations between base-to-rover. RTNs make use of a several base stations together to collect GNSS observations that can be used with a rover to compute a position relative to the network solution in real-time. During the last few years more public and private RTNs have been rapidly increasing, providing larger coverage zones (mostly in higher populated regions). However due to the size of Canada and the availability and extent of RTN zones, RTK surveying remains to be the viable option in GPS surveying.RTK Surveying in Canada

Both RTK & RTN GNSS surveying can allow people to achieve relative positioning with centimetre (cm) precision, however there are several important factors that need to be considered and thus a need for a good guide of best practices (equipment calibration, errors, multipath, geometry, etc.). Therefore Natural Resources Canada (NRCan) put together a group of exports from various departments that came together to publish a new set of guidelines for RTK / RTN GNSS surveying in Canada in order to better assist the surveying community and the growing geomatics industry in Canada. Their goal was to provide the industry with a set of concise and easy to follow best practice guidelines that when followed can help users achieve centimetre level RTK/RTN survey accuracy.

You can download the 29 page PDF document with this link

http://www.nrcan.gc.ca/sites/www.nrcan.gc.ca/files/earthsciences/pdf/Canada-RTK-UserGuide-v1_1-EN.pdf

Public Real Time Networks in Canada for RTK Surveying

[Article original published: Aug. 2013]



Post Update:
Since publishing this info last year, I have come across some other similar documents about RTK GNSS surveying from various other sources and have included the links to them below.


5 most viewed Total Stations

Total Stations - Viva TS15 - Leica5 most viewed Total Stations

Total Stations - NPL-322 – by Nikon Geo-matching .com is a great website that features a variety of the latest equipment used in the geomatics sector, including total stations. This online service is a great way that allows users to compare various geomatics related product and read other reviews from actual people in the Geospatial sector in order to help them make a well balanced purchase decision.

Total Stations - S8 - by TrimbleGeo-matching is a product comparison style website for geomatics related devices and provides users with good overviews of Total Stations, UAVs, GNSS Receivers, and other hardware used in the industry. The total-station category now features, the GTS340Rs, RTS 330, NPL-332, FOCUS 35, KTS-470C, R10, and Pentax W-1500N.

Geo-matching also compares products such as digital cameras, LiDAR equipment, laser scanners, photogrammetric workstations and image processing software. If you have used any of these geomatics related products then you should consider visiting the site and sharing your experiences with total stations, so others in the geomatics community can benefit from your input.

Total Stations - Total Station BasicsThe top total stations viewed in February from the geomatics community on Geo-matching.com were:

  1. S8 by Trimble
  2. DS Series by Topcon
  3. NPL-322 by Nikon
  4. Pentax W800 Series by TI Asahi
  5. KTS-580 R Series by Kolida

It is interesting to note that Trimble views increased since the last time we posted the Geo-matching rankings, climbing to the top of the list and Leica dropped out of the top 5 all together. Personally we have always used Leica total stations

Keep in mind this top 5 list is based on website views, therefore you should really go to Geo-matching.com yourself, read the available material and user reviews; then decide for yourself which total station is best for you.


Geomares PublishingGeo-matching.com is part of Geomares Publishing, a publisher of books, magazines, websites, in topics related to Geomatics & Hydrography.

Geomares Publishing, Nieuwedijk 43, 8531 HK Lemmer, The Netherlands, Phone +31 (0)514 561854, email: info@geomares.nl

Top 5 Total Stations

5 most viewed Total Stations

Top 5 Total Stations (based on user views)

Total Stations - NPL-322 – by NikonGeo-matching .com is a great website that features a variety of the latest equipment used in the geomatics sector, including  theodolite and total stations. This online service is a great way that allows users to compare various geomatics related product and read other reviews from actual people in the Geospatial sector in order to help them make a well balanced purchase decision.

Total Stations - S8 - by TrimbleGeo-matching is a product comparison style website for geomatics related devices and provides users with good overviews of Total Stations, UAVs, GNSS Receivers, and other hardware used in the industry. The total-station category offers a variety of hardware including: devices by Topcon, Foif, Nikon, Kolida, LeicaGeomax, TI Asahi and Spectra Precision.

Besides total stations & theodolites, the site also includes UAVs, GNSS receivers, laser scanners, Lidar, image processing software and digital photogrammetric hardware. If you have used any of these geomatics related products then you should consider visiting the site and sharing your experiences, so others in the geomatics community can benefit from your input.

Total Stations - Viva TS15 - Leica

The top total stations for 2014 based on views from the geomatics community on Geo-matching.com were:

  1. Viva TS15  – by Leica
  2. NPL-322 – by Nikon
  3. S8  – by Trimble
  4. Pentax W800 Series – by TI Asahi
  5. KTS-580 R Series – by Kolida

 

However we think that you should keep in mind this top 5 list is based on website views and you should really go to Geo-matching.com yourself, read the available material and user reviews; then decide for yourself which total station is best for you.


Geomares Publishing - top 5 Total Stations Geo-matching.com is part of Geomares Publishing, a publisher of books, magazines, websites, in topics related to Geomatics & Hydrography.

Geomares Publishing, Nieuwedijk 43, 8531 HK Lemmer, The Netherlands, Phone +31 (0)514 561854, email: info@geomares.nl

Cansel achieves Autodesk Platinum Award

Cansel achieves Autodesk Platinum Award for the highest growth for sales in Canada

Vancouver, BC, 9 May, 2013 — Cansel announced that they have received Autodesk’ coveted Platinum Award for the highest growth for new sales in Canada, during fiscal year ending on January 31st, 2013. Cansel was the only Canadian company to win Platinum Award from Autodesk for Autodesk’s fiscal year 2013. For 30 years Cansel’s in-house experts have provided tailored solutions of Autodesk technologies including training, support, customization and programming, workflow optimization and standards development. It is now the largest reseller of Autodesk solutions in Canada and ranks number 4 in North America.

”This award signifies that the Canadian marketplace continues to recognize Cansel’s unique value proposition and expertise in helping solve our customer’s business challenges. We have invested over the years to build the largest Canadian team of professional services experts, who come from industry with practical knowledge and experience,“ said Mr. Sasha Nikodijevic, Cansel. “When you combine our team of experts, coupled with Autodesk Suites, our structured implementation methodology and wide selection of hardware, we are able to optimize our customer’s workflow, from field to finish.”

About Cansel
Cansel helps organizations measure, analyze, design and build a better Canada. We are the only company of its kind, providing unique and tailored solutions for over 40 years. The markets we serve include engineering, surveying, construction, mining, architecture, utilities, forestry, and government. Partnering with the world’s leading technology manufacturer’s, (such as Canon, Trimble and Autodesk) Cansel’s national team of professionals combine software, hardware and services to improve your workflow, from field to finish. www.cansel.ca

Autodesk ® is a registered trademark of Autodesk, Inc., and/or its subsidiaries and/or affiliates in the USA and/or other countries.

Canadian GIS Software

Geographic Information SystemsGIS software packages come in many different formats and designed to handle many applications. Some are more robust then others offering a wide range of tools and applications while others are much more simple, the software you use should depend a lot on what your needs are.

There are also many other things to consider such as cost, usability, supported data formats just to mention a few. Canada has many software companies that offer GIS software related packages and many others that sell packages made abroad but available here.

Free GIS software

Geographic Resources Analysis Support System (GRASS) – GRASS software is a free GIS package with multiple functionality including image processing, both raster & vector compatibly, 2D/3D vector network analysis and much more functionality. It operates on various system platforms including shell and a graphical user interfaces.

Google Earth – new twist on traditional GIS that allows you to create 3D maps with existing aerial data sets

Licensed GIS software

PCI Geomatica – Geomatica 2012 from well known Canadian based PCI Geomatics is a powerful easy to learn GIS and Remote sensing package with a wide range of traditional remote sensing, photogrammetry, GIS, cartography, and web development tools.

MapInfo GIS desktop mapping application that now includes CAD tools and .NET program-ability.

ESRI – ArcGIS v10 is the most popular and dependable GIS desktop mapping application available, used world wide.

More software …

Other Mapping Tools

Need to quickly convert spatial coordinates from MTM, UTM or LAT/LONG?

 DataAppeal – Online mapping tool that provides Highly Effective & Interactive 3D Maps

Google Map Maker for Canada

GPS Software

Trimble GPS Planner – handy little FREE software package for planning of GPS Missions, allows you to optimize your base destination region with multiple station locations allowing you to determine where it would be best to record observations, determine elevation masks, generate graphs showing satellite coverage, DOP coverage, and create sky plots of GPS satellites.

Trimble GPS Planning Software

GPS Planning Software allows you to optimize your Survey

After working on many different projects with various companies and partners, it still amazes me how many people do not consult with the latest GPS Almanacs and GPS Planning Software for planning GPS Missions prior to heading out to survey or collect GPS data. Especially for more precise GPS work and we all know how projects these days continue to demand better accuracy as technology evolves.

GPS planning softwareThere is a handy little FREE GPS Planning Software package for planning of GPS Missions provided by Trimble that we use, and is available to download free from their website. This powerful little GPS uttility can run from your laptop or PC allowing you to analyis GPS coverage for any given day helping you to determine visibility for GPS, GLONASS, IGSO and geostationary satellites. When you know what times of day have the best optimal GPS coverage then you can better plan the rest of your survey work.

The GPS Planning Software allows you to optimize your base destination region with multiple station locations allowing you to determine where it would be best to record observations, determine elevation masks, generate graphs showing satellite coverage, DOP coverage, and create sky plots of GPS satellites.

When you use the planning software you have to remmber to download the latest GPS almanac because unlike your GPS equipment, your PC will not automatically update itself with the latest Ephemeris Data. Trimble also helps out by providing this information for you on their website, but it is also provided on various other GPS related websites as well.

http://www.trimble.com/gnssplanningonline/#/Settings

 

[Update – Trimble now offers an online version]

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