| Description | Rates(Include 18% Gst) | |
|---|---|---|
| Digital Global Positioning System Survey (DGPS) | Rs. 25000 to Rs. 50000 per day(as per site conditions) / sq.ft | Pay Now/Call Us |
Overview
Differential Global Positioning System Survey is an important tool in modern navigation. DGPS surveying involves the use of reference stations and satellites to give precision land surveying It achieves higher accuracy by using differential capabilities of two GPS antennas linked by a radio signal. It helps professional surveyors navigate reliably and accurately. They make use of latest and efficient differential GPS equipment for DGPS survey procedure.
Components of Differential Global Positioning System Survey
• Reference Stations: A network of ground-based reference stations is installed right through the area. The DGPS technology leverages this network of stations. These reference stations have very accurate clocks and receive signals from satellites and compare them to their known position. Any discrepancies found are sent out as corrections to users of the system. These stations are also called fixer receivers.• GPS Receivers: A GPS receiver is the primary component of the DGPS system. It receives GPS signals from satellites and decodes them. Thereafter, the receiver calculates the user’s position. This is based on the information received from the satellites, which includes those from the reference station. This is how it got better accuracy.
How Does DGPS Work?
• Before you peep into the details of how DGPS works, it is important to understand how GPS works. GPS is a satellite-based navigation system that has existed for a long time. GPS surveying accuracy provides free and accurate data to anyone who has GPS receiver. GPS works by receiving information from a network of satellites that are in medium earth orbit. These satellites send out radio signals that users can detect with GPS receivers and this information helps in calculating a user’s position. From here, GPS receivers make us of triangulation to pinpoint anyone’s location.• DGPS takes information from GPS satellites and adds extra accuracy to ground-based reference stations. So, instead of your 5-10 meters accuracy, you can get 1-3 meters accuracy with DGPS.
Benefits of Using DGPS
• As you already know that a DGPS is an improved version of the GPS; it makes use of additional reference stations to provide more reliable and accurate positioning data.• The best benefit of differential GPS services is how surveyors can get better reliability and accuracy. Basically, a DGPS can achieve accuracies of 1-3 meters, depending on a variety of factors.
• This means that survey measurements can be conducted with greater reliability and precision. DGPS mapping is ideal for engineering navigation, construction and surveying purposes.
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