The process of surveying basically involves determining the terrestrial position of various points on the surface of the earth. The angles between these points may also be measured. Surveying is used to not only sketch land maps for various purposes, but to also map out ownership and territorial boundaries. GPS survey equipment is used in this process to provide accurate results and lessen the amount of manual effort involved.
GPS technology is a modern surveying and ground positioning mechanism that has gained popularity in the recent past. Government agencies and private companies use it to conduct many different tasks. The equipment used in the process enables them to determine exact positions and distances with exceptional accuracy.
For a professional to successfully conduct a surveying task, they have to be equipped with specialized knowledge. This is derived from disciplines such as mathematics, engineering, geography, physics and geometry. Upon acquiring this knowledge, one is able to make astute calculations and observations, using several tools that are employed in the profession.
GPS equipment comes in different types. The tools used vary in accuracy, and the most accurate ones are usually pricier. There are also compact gadgets which are normally hand held. These provide convenience for the user, especially when covering huge distances in the field.
Such instruments require one to first determine the exact position of specific points. This can be done using a hand-held gadget which calculates the coordinates of a particular location. Some varieties also have the ability to store data for future retrieval and use.
Total stations are used to measure, map and make observations concerning a particular location. These instruments consist of a tripod-mounted gadget which contains a crystal prism. It uses the principle of reflection of light to accurately determine distances between two points. Elevations of land can also be determined using total stations, because they can also calculate angles. Data collectors are then used to store the information collected using these devices.
At times, it may be necessary to determine orientation of the map when surveying. In such a case, one can use a magnetic compass to calculate the orientation of certain objects on a tract of land. This device is one of the most common tools used by land surveyors.
GPS pathfinders are also other instruments used in surveying. These are modern tools which can transmit signals and convey information to a PC. They are stand-alone devices which comprise of an antenna, receiver and battery. Extra antennas can also be attached to enhance accuracy where necessary. A wireless connection feature enables the instrument to communicate with the computer.
There are also other devices which combine multiple features. A commonly-used instrument has an antenna, internal memory and a processor. It is used where on-the-spot positioning is required, such as in land reform projects and utility provision services. Using this tool, one can work with maps and large sets of data in the field. Such compact GPS survey equipment enhances convenience for the user by combining many tasks in one. One does not require carrying many devices when they are using this tool.
