(Yield) Maps - StellarSupport - John Deere

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Glossary
state may have a different coordinate system that attempts to minimize distortion over the state.
Static Features. Objects that do not change in reflectance.
Static Random Access Memory. Electronic data storage device that can be randomly accessed, as opposed to
sequentially accessed. Static refers to its ability to retain the data as long as power is supplied to the device either through
a battery or computer.
Strain Gauge. A device that has a changing electrical resistance as it is deformed. Used in load cells to convert to electrical
signals.
Sun-Synchronous Orbits. An orbit in which each pass of a satellite over a given point occurs at the same local time.
T
Tag. A number automatically created by JDFarm Office which represents the Setup item in the directory structure of your
computer. This number follows the item through the years and does not change. The tag is randomly assigned and cannot
be edited or deleted.
Task. Fourth level in the storage hierarchy. Task names are global. A Task can be assigned to any Field; data for a Field is
stored indexed by Task. A given Field fill typically has several Tasks associated with it over the course of a year. Task
names are created by the user in the desktop software. A task in a field can have 1 to 6 operations associated with it.
Text Format. Export file format which creates an ASCII comma delimited file.
Thermal Band. Infrared wavelengths of electromagnetic energy.
Thematic Mapper (TM). A remote sensor designed to create maps of different surface feature categories or “themes.” The
TM sensor has a spatial resolution of 98 feet (30 m) and is capable of collecting data on seven different bands, including a
thermal band. The TM sensor was flown on LANDSATs 4 and 5.
TIGER Files. (Topologically Integrated Geographic Encoding and Referencing Files) The nationwide digital database
containing street addresses and census boundaries with population statistics.
Tillage. Mechanical soil-stirring actions for nurJDFarm Officeturing crops by providing suitable soil environment for seed
germination, root growth, and weed and moisture control.
Toolbar. A row of buttons underneath the menu bar used to access common commands.
Troposphere. Lower atmosphere.
Turnaround Time. The elapsed time between a satellite taking an image and receipt of that image by the customer.
U
Undefined values. Setup items (carrier, contract, farm, field, implement, load destination, machine, product, operator, rate
and task) that have a negative tag ID indicating that they are not predefined in Setup.
Universal Transverse Mercator (UTM). A metric coordinate system commonly used for mapping at scales of 1:500,000 or
larger. Satellite imagery is usually supplied in UTM coordinates because it provides georeferencing at high levels of
accuracy for the entire grid.
Unknown. Created when you unload your PC Card into a version of JDFarm Office that does not have the Setup data as
defined or chosen in the combine.
Unnamed. If you use the Undefined feature on the GreenStar Display, you will have Unnamed farms or fields in your file list.
Unnamed farms or fields cannot be unloaded from the PC Card without first choosing an existing farm or field to merge the
data with, or creating new ones.
User Segment. The portion of GPS consisting of receivers used by civilians and the military for determining the position of
a person or object.
V
Variable-Rate Application (VRA). Adjustment of the amount of cropping inputs such as seed, fertilizer, and pesticides to
match conditions in a field.
Variable-Rate Technology (VRT). The equipment used to perform variable-rate applications of crop-production inputs.
Vector Format. Format for storing and displaying GIS spatial data in which the data is stored as points, lines, or areas that
create the terrain or map objects. By using a nearly continuous coordinate system, vector data can be more accurately
georeferenced than raster data.
Vegetation Indexes. A tool for identifying the levels of health of plant biomass. A vegetation index can be used to assess