A point-in-point verification of the use of RTK

CSCL RTK Point Calibration, CSCL RTK point translation, CSCL RTK single point correction step, how to use the CSCL RTK point calibration,

Hand-thin Model: IHAND20 Android system hand-thin

Software: Hi-survey Road\elec

Instrument: CSCL company arbitrary RTK Products

Use two points to find the process of converting parameters:

First step: Point verification

The second step: check the parameters of the accuracy, measured control points for comparison, or point lofting control points

How do you check for a point check?

After the conversion parameters are obtained, the base station is moved after the selection of arbitrary control points (GPS03) point to do a point check can be!

1, point verification

into Project Settings

System interface, in-point verification information

Select any control point (GPS03) to place the mobile station receiver on the control point, and the bubble Center is collected smoothly.

Source Point Click Smooth Acquisition coordinates

Known point-in-point library Select from Control point or input control Point (GPS03) known coordinates

Click Calculate to view calculation results

Application parameters (Default check)

Click OK

More than one mobile station at the same time, only a mobile station to calculate point verification, other Mobile station manual entry open, direct input OK Save!

2, check the accuracy of the core

After calculating the parameters, we must check the accuracy of the calculated parameters, there are two methods of checking the kernel:

① rags Measurement, the coordinates of arbitrary control points (n,e,z) are compared with the known coordinates (N,E,Z).

② lofting Control Point coordinates, put the mobile station on the control point, the display of the movement is the error.

The error is not small (less than a few centimeters) can be measured normally, otherwise due to recalculation.

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Precautions

1, Local have known control point coordinates

Prerequisites for using a point-and-point correction:

The project contains local area conversion parameters (four parameters previously obtained using two control points, or the seven parameters obtained by three control points)!

If the project does not have the local area of the conversion parameters, you can not use a point-point correction! Remember!

Even if the GPS01 do a bit of calibration, run to GPS05 check the core will be biased, or GPS03 do a point check, run to GPS01 and GPS05 check the core will be biased

At this point, you must first use two points to find the conversion parameters, see:

2, self-assumed coordinate measurement

New to a site self-assumed coordinate measurement instructions:

New to a site without any known coordinates, assume the coordinate measurement. Just use the last item coordinate parameter off the new project, the projection mode select Gauss Three degree band, the central meridian is 99°,102° or 105°, set the base station transmit signal, set the mobile station receiving signal, get fixed solution after direct measurement, the measured coordinates are WGS84 coordinate system coordinates. When measuring, make several mark points as control points (A1\a2\a3 ... ）。

The next day measurement, or later measurement, no matter what time, the base station after the mobile, just find any control point single point of check can!

This situation does not require conversion parameters!

3. For power measurement customers

It is possible to do a point check with just one point, it is not necessary to use two points to find the conversion parameters!

4, as long as moving the base station, or reset the base station are required to do a point check!

5, point Check and point translation difference?

The point check acts on the points collected later, and the point translation acts on all points in the entire Project Point library.

Point translation An item can be used only once, and the data will be faulted when used for the second time.

Point check a project can be used many times, stable recommended use!

5, it is recommended to create new projects every day, do a bit of verification, even if the data errors will only affect the date of the day!

CSCL Kunming Technology Network disk: http://zhdkm.ys168.com

CSCL Kunming Technology Blog: http://www.cnblogs.com/zhdkm

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A point-in-point verification of the use of RTK