What is the difference between GPS and GNSS
GPS ("Global Positioning System") is an American satellite system, one of many satellite systems used for navigation. With the help of one GPS, you can get an accuracy of even a few millimeters.
Also, there is a GLONASS system - Russia; GALILEO - satellite system of the European Union; BEIDOU - satellite system of China; QZSS (Quasi-Zenith Satellite System) - Japanese satellite system; IRNSS (Indian Regional Navigation Satellite System) - Indian satellite system.
GNSS is the general name of all satellite systems, because receivers can be single-system with support only, for example, GPS or only GLONASS, but if the receiver supports work with several satellite systems, then such a receiver will have the name GNSS. The use of multi-system receivers increases the stability and accuracy of satellite data, especially in areas with weak reception.
What GNSS RTK Systems are Used for
GNSS RTK systems are perfect for all types of GPS mapping surveys as they can analyse the area's infrastructure in minute detail. They are valuable tools for land surveyors when identifying the position of cables, pipes, buildings and any other infrastructure. GNSS RTK can also be used for mapping the natural landscape accurately for geographical surveys or land preparation for landscape designers or when planning roads or buildings.
Why do we need precision agriculture?
Precision agriculture gives farmers the ability to more effectively use crop inputs including fertilizers, pesticides, tillage and irrigation water. More effective use of inputs means greater crop yield and(or) quality, without polluting the environment.
Through the introduction of a agricultural guidance system (tractor GPS), it is possible to significantly reduce production costs and reduce the cost of production. Using modern high-performance equipment that allows the use of digital technologies, you can save up to 15% or more of general production costs.
Digitization of fields with the help of GNSS measurement devices makes it possible to realistically assess the situation in the economy and optimize the technology of growing crops, eliminate excessive consumption of fuel, seeds, plant protection products and increase productivity. The agronomist in the shortest possible time and with high accuracy will be able to map the fields (create electronic maps), get the contour of the field of any shape.
At a sufficiently large scale, this approach can significantly reduce unit costs and increase profitability.
Why agri-navigators of some manufacturers "see" big quantity of satellites, but give poor accuracy from pass-to-pass?
Probably, many have noticed that there seem to be about 20 satellites in visibility, and the agronavigator directs the equipment with an offset of 1.5 - 2 meters. What is it connected with? This is primarily due to the fact that not every GPS/GNSS receiver is suitable for an agricultural guidance system. Leading manufacturers have separate receivers for agricultural navigation, geodesy, mapping, etc. It is depends on internal firmware features. There are many different devices on the market today that can receive a signal from more than 20 satellites at the same time, but this does not allow them to be used for accurate agricultural guidance, if we talk about accuracy of less than 30 cm from pass-to-pass. This is due to the fact that such navigators are equipped with inexpensive consumer (not professional) receivers of satellite signals, in which the manufacturer has incorporated the function of quick location, but not the function of accurate guidance.
Parallel guidance will be accurate only when using specialized GNSS receivers and base stations (RTK - technology that allows centimeter accuracy), or using special software that makes adjustments specifically for accurate parallel driving.
How many satellites "catches" agronavigation Geotrack
The GM Smart GNSS receiver, which is equipped with Geotrack navigation, works simultaneously with satellite systems GPS, GLONASS, GALILEO, BEIDOU, QZSS, IRNSS, SBAS and can simultaneously "catch" up to 40 satellites.
If there are 2 fields with a long common border, how to pass the first rut smoothly without "crossing" into the neighbor's field?
The Geotrack guidance system has the "Movement by azimuth" function. It is necessary to choose the movement along the "Straight line A-B", starting the movement, put point A, after which the azimuth will appear, the direction of which must be observed.
Does the Geotrack navigator have a field area measurement function?
Yes. The geotrack software includes a field area measurement function. In this case, the area can be measured even with the lateral offset to the right or left. To do this, select the "Area measurement" function in the main menu and go around the field around the perimeter, closing the contour. The resulting field can be saved for further work.
Is it possible to save unfinished work and then resume it from the same place?
Yes. There are 2 options in this case. 1. With a short break, you can pause the work and then continue. 2. The job can be saved and resumed from the saved location.
Does Geotrack navigation have a hectare counter function?
The geotrack software is essentially an improved version of the hectare counter, but with much more functionality. While driving, the cultivated hectares are automatically calculated based on the working width of the specified implement before driving.
Does the Geotrack navigation have a sprayer section control feature?
The geotrack software provides this capability, working when integrated with the Geoline sprayer section control computer. The Geoline 250 model is supported but have to be modified by our service team.