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Global Positioning System (GPS) is a space-based navigation system that uses a constellation of satellites to determine the location of the receiving unit on Earth. GPS satellites circle the globe in a precise orbit, transmitting coded radio signals; at least four of their signals can reach any given point on Earth at one time. These signals can pass through clouds, glass, and plastic; the signals weaken when passing through solid objects such as buildings and cannot pass through objects that contain high levels of metals. For land conservation purposes, it is important to note that a GPS unit will not receive satellite signals when under thick forest canopies, underground, or underwater.
Although GPS was originally developed in the 1980s for military purposes, today the technology provides positioning, velocity, and navigation information for a wide range of users.
GPS helps conservation organizations and municipalities manage land by recording positional data in the form of points (e.g., location of a tree or property corner), lines (e.g., a trail), or areas (e.g., a lake). By importing the data into Geographical Information System (GIS) software, users can create maps of this data.
To use GPS effectively, an organization must invest in some combination of equipment and software, and either train or hire staff to operate it.
DNRGPS download file is only 39.4 MB in size. DNRGPS was filed under the Geography category and was reviewed in softlookup.com and receive 5/5 Score. DNRGPS has been tested by our team against viruses, spyware, adware, trojan, backdoors and was found to be 100% clean. We will recheck DNRGPS when updated to assure that it remains clean. Aug 21, 2019 Start DNRGPS by selecting it from the program list on your computer, or (depending on how you have installed the software) clicking on the DNRGPS icon (it looks like a small calculator) on your desktop. Connecting Your GPS. Connect your GPS receiver to the computer using the data cable provided with your GPS receiver.
Mapping Landscape Features
GPS enables users to map the location of a wide variety of features in the field, such as mature forest, specimen trees, invasive species, soil erosion, fire-disturbed areas, riparian buffers, and waterways. Users can also map human-made features like trails, benches, buildings, roads, driveways, and fences. Once mapped, these features can be easily located with a GPS device on return visits to the property.
Linking Photos to GPS Coordinates
Users can take digital photos in the field and link them to GPS coordinates in the GIS database. This allows users to establish a visual record of important features and their precise locations. By comparing photos of the same location taken at different times, users can notice changes to the property. (This can be particularly helpful for monitoring easements and identifying potential violations.)
Documenting Property Boundries
GPS allows users to document the coordinates of property boundaries. In the past, surveyors used landmarks (which can be destroyed or moved over time) to define boundaries. Since GPS uses exact coordinates rather than relational landmarks, it produces measurements that remain accurate no matter what happens to the surrounding land or physical objects used as landmarks. (Note that accurate surveying of property boundaries necessitates the use of survey-grade equipment; see the heading “Survey-Grade” below. Also, depending on the purpose of the survey, the law may require the work to be completed by a licensed surveyor.)
Documenting Other Boundries
Land trusts can use GPS to document boundaries between areas subject to different levels of restrictions under a conservation easement, for example, the border between an area that is to remain in a largely wild state and an area where farming is permitted.
A GPS receiver is the electronic unit that receives satellite signals and produces positional data, which can then be analyzed using mapping software. GPS devices vary greatly in price and quality. Since technology is always improving, it is best to research current receivers before making a purchase. Some companies rent receivers, which gives organizations the chance to test different receivers before making an investment.
Types of GPS Recievers
Basic/Recreational
These units are the least expensive. Designed for outdoor recreation activities like hiking and camping, they provide basic latitude and longitude coordinates while plotting points of interest and straight-line routes. Most are accurate within five to 10 meters. Users can only identify points with a short name and ID number; additional attributes must be recorded manually and entered into GIS software. Basic units generally cost between $200 and $500.
Map-Grade
These units are more sophisticated. They allow for enhanced data collection, greater map detail, and more precise navigation. When enabled with WAAS (Wide Area Augmentation System), they are accurate within three meters; with the use of differential GPS[1], accuracy can be as close as one meter. Some can also receive additional signals from GLONASS[2] satellites for even greater accuracy. Most come with base maps installed; more detailed maps are available for purchase. Units may have additional features like touch screens or built-in cameras. Garmin, Trimble, and Magellan are the leading companies offering map-grade units; Trimble offers the most advanced (and expensive) units. Units can cost from $500 to thousands of dollars depending on level of accuracy and other features.
Smartphones and tablets are another option. With built-in software or downloadable GPS applications like MotionX, GPSLogger, and GPX Viewer (recommended by multiple land trusts), they can perform some of the same functions as a commercial-grade handheld GPS. An internet search reveals a wide variety of GPS applications for both Apple and Android devices, and most of them only cost a few dollars.
Survey-Grade
Used by surveyors for precise measurements, these units are extremely accurate, sometimes to within a centimeter. They can cost tens of thousands of dollars and require extensive training and expertise, making them impractical for most land trusts and municipalities.
Aerial
A recent development in GPS technology for land trusts is the use of unmanned aerial vehicles (UAVs, also known as drones) to collect data-enabled aerial imagery of properties. Since UAVs receive GPS signals, each video image they collect is linked to a specific location. Platforms like Survae allow land trusts to use this data in a variety of ways, from creating GIS map layers to monitoring easements over time. They also allow users to create customized routes, which UAVs can fly at specified elevations. Land trusts may hire licensed pilots to conduct the flights, eliminating the need to train staff or purchase UAVs themselves.
Purchasing Considerations
There are several factors to consider when purchasing a unit:
- Accuracy. Different receivers provide different levels of accuracy.
- GIS Data Integration. Some units convert GPS points to specific GIS or Google Earth formats, which may or may not be compatible with certain mapping software.
- Attributes. Many GIS users have found that accurate attribute[3] collection is just as crucial as location acquisition. Only the more advanced map-grade GPS units allow users to collect and input detailed attribute information.
- Device Compatibility. Some GPS units can wirelessly synch with digital cameras, rangefinders, or other field devices to receive additional data; this might require additional hardware or software. Other models have built-in cameras.
- Memory Capacity. Units that use auxiliary memory cards in addition to internal storage allow users to purchase morel memory capacity in the future, if necessary. Some unit/software combinations allow users with an internet connection to upload data directly from the unit to the cloud for storage.
- Durability. Some units are designed for use in rugged environments, with features like water-resistant screens, push-button controls, and protective outer casing.
- Battery. Some units use standard batteries, while others use internal rechargeable batteries. A device that includes a sleep mode or battery-save function will extend battery life while in the field.
For general information about choosing a GPS receiver, see:
“Tips on Selecting the Right GPS Receiver, for Your Job” (Resource Analysis)
“Recreational Versus Professional GPS: What’s the Difference?” (Esri)
“Maps & Geospatial: Global Positioning System (GPS)” (Penn State)
For product comparisons and reviews, see:
“Best Handheld GPS Review” (Outdoor Gear Lab)
“Handheld GPS for Surveyors” (Land Surveyors United)
“Handheld GPS Buyers Guide” and “Garmin Handheld GPS Comparison Chart” (GPS Tracklog)
There are many GPS software packages available on the market. Many are free. These are some of the most prominent applications.
Installed on GPS Unit
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ArcPad
ESRI software for GPS units that allows mobile field mapping and data collection. Purchase required; free trial available.
Trimble GPS Pathfinder
Office software that supports all aspects of GIS data collection and maintenance for most Trimble GPS receivers. Purchase required.
Garmin BaseCamp
Previously known as MapSource, a free mapping software compatible with most Garmin GPS units.
Installed on Computer or Other Device
Google Earth
Free virtual globe, map, and geographic information program. Google Earth Pro is available for desktop; in early 2017, Google Earth for Chrome was released as a non-desktop version. Some GPS units have a direct download to Google Earth. See the user’s guide for more information.
DNRGPS
Free application developed by the Minnesota Department of Natural Resources that allows users to transfer data between GPS receivers and GIS software. Users can upload or download waypoints, tracks, and routes; calculate shape attributes; hyperlink images; and more. It is compatible with most Garmin GPS units and NMEA-output units from other companies.
MapGuide Open Source
Free platform that enables users to create their own maps and mapping applications. Includes an XML database for storing and managing content, and supports most geospatial file formats, databases, and standards.
TopoFusion
Free GPS mapping software with a variety of features that allow users to geotag photos, blend different map types, and visualize multiple routes simultaneously.
Organizations should create protocols for collecting data, focusing on consistency and accurate documentation. GPS users should always record the source of and expected precision of data, which allows it to be combined with other data and ensures that future users will know exactly how it was collected. If not documented appropriately, data might be unusable in the future.
The admissibility of GPS data in a court of law varies depending on who collected the data and how they collected it. A court will accept a property boundary determined by a licensed surveyor using a survey-grade GPS. It is less certain how a court might view geographic information recorded by land trust staff using a non-survey-grade GPS unit, for example, the boundary between areas that have different levels of protection in a case where a newly constructed building appears to encroach on an area in which it is not permitted.
For more information about legal risks and implications, organizations should discuss GPS practices with their legal counsel.
See “Stewardship Tools: Who’s Using What?”, published in LTA’s Saving Land magazine, to see comments from different land trusts about their preferred GPS units and applications (as of 2016).
See the website GPS Tracklog for GPS-related news, reviews, buyer’s guides, and more.
See the website GIS Lounge for information about GIS mapping software, GPS tutorials, and more.
[1] Differential GPS overcomes GPS errors by using a series of base stations in combination with satellite data.
[2] The Russian version of GPS; its constellation of 24 satellites provides global coverage.
[3] “Attribute” refers to non-spatial information about a feature. For example, attributes of a stream could include its name, length, and sediment load.
DNRGarmin is a freeware software app filed under mapping and made available by State of Minnesota for Windows.
Wii system transfer wad. The review for DNRGarmin has not been completed yet, but it was tested by an editor here on a PC and a list of features has been compiled; see below.
If you would like to submit a review of this software download, we welcome your input and encourage you to submit us something!
Garmin GPS tools which transfer to mapping programs
DNRGarmin has a real-time tracking mode that allows users to follow their progress on the ground within an ArcView View Document, ArcMap Data Frame, or Landview Map. This real-time track log can be saved as either points or lines as a set of graphics or in a shapefile.
Line and Polygon Graphics or shapes can be uploaded to the GPS as Track Logs or Routes. Conversely, Waypoints, Track Logs, and Routes collected using the GPS can be transferred directly to ArcView/ArcMap/Google Earth/Landview and saved as Graphics or Shapefiles.
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Features and highlights
- Transfer data between Garmin GPS handheld receivers and various GIS software packages
- Real-time tracking mode that allows users to follow their progress on the ground
- Download waypoints, tracks, and routes from Garmin GPS and save as ArcView Shapefiles or Graphics
- Converts Waypoints downloaded from the GPS unit into a point shapefile or graphics
- Convert Point shapes or graphics to a GPS Waypoint
- Adds basic documentation to ArcView themes including Name, GPS Model, Date, Agency
DNRGarmin on 32-bit and 64-bit PCs
This download is licensed as freeware for the Windows (32-bit and 64-bit) operating system on a laptop or desktop PC from mapping without restrictions. DNRGarmin 5.4.1 is available to all software users as a free download for Windows 10 PCs but also without a hitch on Windows 7 and Windows 8.
Dnrgps For Mac Computers
Compatibility with this software may vary, but will generally run fine under Microsoft Windows 10, Windows 8, Windows 8.1, Windows 7, Windows Vista and Windows XP on either a 32-bit or 64-bit setup. A separate x64 version may be available from State of Minnesota.
Filed under:Dnrgps For Mac Os
- DNRGarmin Download
- Freeware Mapping
- Major release: DNRGarmin 5.4