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, users are able to achieve geo-referenced data directly in the field via the laser scanner onboard user interface. For example, a Resection or Auto Resection option with four or six parameters allows for the calculation of coordinates and orientation of an unknown station, simply by measuring known targets around the setup. Such a procedure is daily business for surveyors when using modern total stations.

切除申请如何工作？

通过切除工作流程，用户可以选择完整的六个参数转换，这意味着沿X，Y和Z轴的三个翻译以及围绕同一轴的三个旋转。这需要一组至少要获得三个已知目标。此外，四个参数切除术允许相同的三个翻译，但仅围绕z轴旋转。这仅导致至少两个所需的已知目标，但意味着对激光扫描仪的升级倾斜度较高。

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.

后处理数据

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

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.

Specifically for Resection methods mentioned earlier, this means that station coordinates with standard deviations and target coordinates with their residuals can be displayed as values and graphical plots immediately in the field. This helps to get geo-refenced scans directly in the field. Registration errors, which are typically found during office post-processing, can be detected and avoided immediately during the scan acquisition process.

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,intuitively知道如何在3D激光扫描仪上使用它们。

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Peter Glueck
Product Manager, Terrestrial Laser Scanning
Reality Capture Division