What Is Satellite Station In Surveying

Gps was originally intended for military applications but in the 1980s the government made the system available for civilian use.

What is satellite station in surveying.

It is dependent on gps satellites high above the earth which transmit signals containing the time and location of the satellite. A total station is an electronic optical tool utilized in modern surveying. There is a zero point of reference called a total station. Satellite surveying is a form of land survey that uses location information provided by the gps satellite system to track the location of each reference point.

The instrument can be freely positioned so that all survey points are at a suitable sight from the instrument. Satellite station to secure well conditioned triangles or to have good visibility objects such as chimneys church spires flat poles towers lighthouse etc are selectedastriangulationstations. In surveying free stationing also known as resection is a method of determining a location of one unknown point in relation to known points. Satellite surveying is a form of land survey that uses location information provided by the gps satellite system to track the location of each reference point.

The device is used for civil work as well as to solve other problems and renders savings in terms of the work force required and the time taken for decision making. A total station is used for carrying out goniometric measurements concurrently with measurement of lengths. Gps works in any weather conditions anywhere in the world 24 hours a day. A radio signal is transmitted at a steady frequency by the satellite but a stationary observer detects a higher frequency as the satellite approaches and a lower one as it recedes.

The principal method of using satellites for accurate positioning is based on an application of the doppler effect. Three space co ordinate maps are generated with an accuracy determined by the datum position accuracy and optical resolution of the satellite platform. The gps is a satellite based navigation system made up of a network of 24 satellites placed into orbit by the u s. How many feet are in surveying.

Satellite survey remote sensing utilise satellite imagery which have been processed using commercial geographic information system software.