What is the accuracy of a total station?
A typical total station can measure distances up to 1,500 meters (4,900 ft) with an accuracy of about 1.5 millimeters (0.059 in) ± 2 parts per million.
Can total station measure vertical distance?
When hand calculating the vertical distance between points, this difference needs to be taken into consideration. Because the total station gives a true slope distance, the vertical difference is simply V = s * sin α (see figure below).
In which direction it is best to place the total station for obtaining the best output?
In which direction it is best to place the total station for obtaining the best output? Explanation: The best procedure while using a Total Station is to set a convenient “north” and carry this through the survey by using back sight process when the instrument is moved.
Which is more accurate GPS or total station?
GPS receiver based systems are ideal for larger jobsites, and accuracy requirements of 8 millimeters (0.03 feet). Total Station based systems provide the highest possible degree of accuracy for site positioning, stakeout, grade checking and measurement.
How does a total station measure distance?
A total station consists of a theodolite with a built-in distance meter (distancer), and so it can measure angles and distances at the same time. The horizontal distance, the height difference and the coordinates are calculated automatically and all measurements and additional information can be recorded.
Where is data stored in total station?
Which unit in total station processes data collected? Explanation: Microprocessor is the unit that processes the data collected and uses it to compute various features like horizontal and vertical distances, slopes, elevation, etc. Explanation: Total station is affixed on to the tripod.
How do you measure vertical distance?
Vertical distances are measured along the vertical axis to determine the difference in height (or elevation) between points. Vertical angles are measured in the vertical plane either above or below the horizontal plane of the instrument.
Which of the following best indicates the location of details of the survey?
6. Which of the following set indicates the location of details of the survey? Explanation: The methods radiation and intersection usually involves collecting or locating the required details which accessed for computing the survey. Traversing and resection involve the location of plane table stations.
What is total station in surveying?
A Total Station is a modern surveying instrument that integrates an electronic theodolite with an electronic distance meter. Total Stations use electronic transit theodolites in conjunction with a distance meter to read any slope distance from the instrument to any particular spot.
What are the parts of total station?
Total stations often contain a few different components:
- Electronic transit theodolite.
- Electronic distance meter (EDM)
- Microprocessor.
- Electronic data collector and storage system.
How big is an error on a total station?
This is a gross error check for distance measurements and errors of the order of 2 or 3mm will usually be acceptable. 6) If the result is greater than the accuracy stated on the Total Station then you are best advised to have it adjusted, or repaired, and calibrated by your specialist survey equipment supplier
Is the angular error less than the total station accuracy?
However, your angular error should be less than the stated accuracy of the Total Station. For example, H1 = 180 degrees 0 minutes 0 seconds. H2 = 0 degrees 0 minutes 3 seconds. Then (H1)- (H2) =179 degrees 59 minutes 57 seconds. This is a 3 second inaccuracy. If the Total Station is classed at 5 second accuracy, then the result would be acceptable.
What should the result of a total station check be?
If the Total Station is classed at 5 second accuracy, then the result would be acceptable. If the result is greater than the accuracy stated on the Total Station then you are best advised to have it adjusted, or repaired, and calibrated by your specialist survey equipment supplier. Total Station Check No. 5. The Trunnion Axis Check.
What is a 3 second inaccuracy on a total station?
This is a 3 second inaccuracy. If the Total Station is classed at 5 second accuracy, then the result would be acceptable. If the result is greater than the accuracy stated on the Total Station then you are best advised to have it adjusted, or repaired, and calibrated by your specialist survey equipment supplier. Total Station Check No. 4.