Why Buy GNSS?
Today’s GNSS receivers can leverage multiple satellite systems to track the maximum number of satellites to obtain quality, high-precision survey data for any project in any location.
Why is GNSS better than the traditional GPS-only receivers? By using a combination of the satellite systems, surveyors can achieve increased accuracy, and they spend less time planning their surveys and more time in the field.
Increased Accuracy
The more satellites from which a receiver obtains data, the better the satellite geometry and ultimately the better measurement precision. A GPS receiver can see between six and eight satellites at any given time in an open plain. However, if obstacles are present, such as a forested area, the receiver will have access to much fewer satellites. A GNSS receiver in the same location would instantly have access to the GPS satellites, but also to any GLONASS satellites.
Efficient Surveying
Single satellite systems have a limited number of available satellites at any given time, which when combined with obstacles such as tall trees or buildings, can make it challenging to determine when the optimal survey time would be.
Planning software helps surveyors determine the best time of day to collect data from a favorable distribution of satellites based on any given point or date. Planning software helps surveyors determine at what time what satellites will be visible from a given point, where the satellites will be positioned in the sky and any Dilution of Precision (DOP) factor.
The benefit of using GNSS receivers is that by accessing multiple satellite systems, such as GPS and GLONASS, more satellites are available at any given point and time to produce accurate data.
