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2. GPS in the earthmoving industry - Wikipedia

   en.wikipedia.org/wiki/GPS_in_the_Earthmoving...

   While there are various GPS systems currently used in the heavy equipment industry, they can typically be categorized as either "indicate only" or "fully automatic". [4] Both systems can utilize one or two GPS receivers. Using only one GPS receiver limits how the guidance system can orient the machine's position in respect to the site design ...

3. Trimble Inc. - Wikipedia

   en.wikipedia.org/wiki/Trimble_Inc.

   Trimble Inc. is an American software, hardware, and services technology company. Trimble also does hardware development of global navigation satellite system (GNSS) receivers, scanners, total stations, laser rangefinders, unmanned aerial vehicles (UAVs), inertial navigation systems and software processing tools.

4. Selective availability anti-spoofing module - Wikipedia

   en.wikipedia.org/wiki/Selective_availability...

   A Selective Availability Anti-spoofing Module (SAASM) is used by military Global Positioning System receivers to allow decryption of precision GPS observations, while the accuracy of civilian GPS receivers may be reduced by the United States military through Selective Availability (SA) and anti-spoofing (AS). [1]

5. Omega (navigation system) - Wikipedia

   en.wikipedia.org/wiki/Omega_(navigation_system)

   Omega stations used very extensive antennas to transmit at their very low frequencies (VLF). This is because wavelength is inversely proportional to frequency (wavelength in metres = 299,792,458 / frequency in Hz), and transmitter efficiency is severely degraded if the length of the antenna is shorter than 1/4 wavelength.

6. GNSS applications - Wikipedia

   en.wikipedia.org/wiki/GNSS_applications

   GPS unit showing basic way point and tracking information as typically required for outdoor sport and recreational use. Heavy equipment can use GNSS in construction, mining and precision agriculture. The blades and buckets of construction equipment are controlled automatically in GNSS-based machine guidance systems.

7. Real-time kinematic positioning - Wikipedia

   en.wikipedia.org/wiki/Real-time_kinematic...

   A surveyor uses a GNSS receiver with an RTK solution to accurately locate a parking stripe for a topographic survey. Real-time kinematic positioning (RTK) is the application of surveying to correct for common errors in current satellite navigation (GNSS) systems. [1]