Back site Resection method of TOPCON GM-52 GM5 SERIES in urdu/hindi

What is Resection

Resection is a crucial method employed in surveying, wherein a total station is strategically positioned anywhere on-site. By taking observations from two or more control points, this technique facilitates the preparation for the layout of single-point coordinates or line layouts. The flexibility of this method allows the machine to be set up at various locations, yet precision demands a clear line of sight to the designated observation points. This ensures the accuracy of the total station setup, enabling efficient and accurate surveying operations.
Note: you can learn this method by reading this article and watching the demo video below
So, I have the TOPCON total station, which model is the GM 52 model,
how will you do the restriction on the Topcon total station after leveling and centering setup
Now You need to go to the menu menu if  You want to do the resection method for your total station,
In the main menu, you will get an option as below in the picture

And more in the next pages
After entering the first option you will get more option.

OCC. Orientation:

This option is used for back site resection for coordinates and elevation also

Observation:

by this option, you can find coordinates and elevation also if you have setup your total station for both

EDM:

This is the sitting option for the reflector and observation option

Select the first option OCC. Orientation

So your next interface will be like this as shown in the picture

Press F4

For resection, you have to press F4 for the resection method
By pressing F4 you will go to the next enter face.
NEZ:

 It means NORTHING EASTING AND ELEVATION

Elevation:

 Simple for elevation method only

Setting: 

For settings like changing your target option observation option and more
For coordinate resection you have to select NEZ              
and for elevation, you have to select Elevation
Press enter while keeping highlighted on NEZ
Your machine is now ready for observation 1st point so target the first point and take an observation on the first point by pressing  F4 as you press F4 total station will observe your first point and ask for height give your required height of the prism rod and proceed on yes
Then the machine will ask for point data like Northing, easting, elevation, and height of rode give the required data of that point you have absorbed.
Here you will also get more options like

Load

 REC

 Next

Load option is for the data if you have saved your data in your total station
So you can enter the data manually on the same screen or use the load option to select a point
And proceed next now your machine is ready to measure the 2^nd point and the same process as above after the 2^nd point data selection you will get different options as you can see I have selected S-2 also don't forget about your HR Height of the prism.
shown in the picture below

PRESS F4 

Proceed to click on calculate and this will go to another interface in which you will see the options below
Result, With this option you can see your different points and results
NEZ
OK  process on ok and you will get another interface as shown in the picture

Press F4

Then proceed to yes
So that your resection method is completed.
More details about resection
The resection method with a Topcon total station involves a systematic approach to achieve accurate surveying outcomes. Here's a detailed explanation:
1. Setup Preparation: Begin by selecting a suitable location to set up the Topcon total station. Ensure the area offers clear visibility to the surrounding landmarks or control points that will be used for resection.
2. Instrument Setup: Properly assemble and level the Topcon total station according to manufacturer guidelines. Ensure that the instrument is securely mounted and leveled to minimize errors during observations.
3. Observation Planning: Identify at least two known control points in the vicinity of the survey area. These points should have known coordinates or have been previously established through other surveying methods.
4.Point Selection: Using the total station's telescope, sight each control point and record the horizontal and vertical angles to each point. Aim to select control points that offer a wide angular separation to enhance the accuracy of the resection calculation.
5. Data Collection: Input the observed angles and distances to the control points into the Topcon total station's data collection software. Ensure that all measurements are accurately recorded to minimize errors in subsequent calculations.
6. Resection Calculation: Utilize the resection function or software feature within the Topcon total station to compute the instrument's position relative to the observed control points. This calculation typically involves triangulation based on the observed angles and known coordinates of the control points.
7. Verification and Adjustment: After completing the resection calculation, verify the computed instrument position against known control point coordinates or other reference data. Make any necessary adjustments to refine the instrument's position if discrepancies are identified.
8. Finalization: Once the instrument position has been accurately determined through resection, the Topcon total station is ready for use in subsequent surveying tasks such as stakeout, data collection, or line layout.
By following these steps with attention to detail and precision, the resection method with a Topcon total station can yield reliable and accurate surveying results.
 

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