Familiar surveying workflows onboard Leica ScanStation P-Series 3D laser scanners

Leica ScanStation P-Series survey-grade 3D laser scanners boast a variety of onboard surveying workflows which are typically well-known by surveyors from the use of their total stations. These workflows, Quick Orientation, Set Azimuth, Known Backsight, Four or Six Parameters Resection, Auto Resection and Traversing, offer the setup and orientation of the instrument by known control points, or by calculating the coordinates of unknown stations by aiming at known target control points.

By using the guided, onboard surveying workflows on theScanStation P-Series，用户能够通过激光扫描仪在板上用户界面直接在现场获得地理参考数据。例如，只需通过测量设置周围的已知目标来计算带有四个或六个参数的切除或自动切除选项。使用现代总站时，这种程序是测量师的日常业务。bob apple

How does the Resection application work?

With the Resection workflow, users can opt for a full six parameters transformation which means three translations along the X,Y and Z axes and three rotations around the same axes. This requires a set of at least three known targets to be acquired. In addition, the four parameters resection allows for the same three translations but for a rotation around the Z axis only. This results in a minimum of two required known targets only, but implies a high accuracy tilt compensation for the levelling of the laser scanner.

As target identification can be easily mixed up and can create a lot of confusion and additional work, the Auto Resection option offers the acquisition of the targets without any target ID input - the geometry of the target configuration around the laser scanner is used to match the correct targets.

Post-processing the data

After data import inLeica Cyclonepoint cloud processing office software, no additional manual registration steps are required inLeica Cyclone REGISTER.

Surveyors often have to deliver data that is registered to a job coordinate system (e.g. a construction grid). This data is required onsite without delays by office post-processing.

ScanStation P-Series onboard surveying applications assist in getting registered, geo-referenced point clouds quickly by a ‘total station like’ procedure.

特别是针对前面提到的切除方法，这意味着与标准偏差的站坐标和及其残差的目标坐标可以立即显示为值和图形图。这有助于直接在现场进行地理探索的扫描。通常在办公室后处理过程中发现的注册错误，可以在扫描获取过程中立即检测和避免。

What’s unique about the onboard surveying applications?

ScanStation P-Series instruments are the only laser scanners in the market which include this complete set of surveying workflows. Such workflows are offered based on some unrivalled and fundamental features of the P-Series laser scanners. A highly accurate dual-axis compensator as used in Leica Geosystems high-end total stations guarantees for levelled scan data. ScanStation P-Series instruments are the only laser scanners with active target acquisition and coordinate calculation onboard, even with a two-face target scan option. For this, black and white targets are used in the same way as reflector prisms for total stations. If needed, a laser plummet allows for a precise instrument setup over a marked point, while input options for atmospheric and geometric corrections define the scale factor for correct distance measurements.

How to get access to the onboard surveying applications?

All surveying workflows are pre-installed applications on all ScanStation P-Series laser scanners and are free of charge, no additional licence or cost is required to get started. Any measurement professional that knows how to work with surveying workflows on a total station,intuitivelyknows how to use them on a 3D laser scanner.

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Peter Glueck
Product Manager, Terrestrial Laser Scanning
Reality Capture Division