# LiDAR ### **LiDAR** (LDR/RXP/SDC/SDCX) LiDAR files contain LiDAR ranging measurements, and when fused with a trajectory, form a geospatial pointcloud. * Raw LiDAR files are uploaded to the project at the same time the PLP is opened. If you have a **RANGER** series scanner the following steps needs to be taken to resolve MTA ambiguities. Step 1: Tools > Convert Riegl RXP to SDCX (MTA Resolution)... > Navigate to and select acquired RXP file(s) > Open * Specify the number of CPU cores to use during processing and configure the other parameters (default values recommended) * Click "OK" to begin RXP to SDCX conversion * SDCX files are written to the same folder as the RXP files ![](/files/-M_74am0dKcNqTbI6uoF) Step 2: After the conversion has finished, File > Save Project, then File > Quit Step 3: Launch SpatialExplorer in Offline Mode, and open up the same PLP again. * SpatialExplorer will now recognize and open the MTA resolved SDCX files --- # Agent Instructions: Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter: ``` GET https://docs-6.phoenixlidar.com/lidarmill-desktop/post-processing/workflow-kk/uploading-files/lidar.md?ask= ``` The question should be specific, self-contained, and written in natural language. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.