https://wiki.yanding.com/ 2026-07-11T05:27:15+00:00 https://wiki.yanding.com/ https://wiki.yanding.com/lib/tpl/myconfluence/images/favicon.ico text/html 2026-07-10T08:03:12+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.yanding.com/doku.php?id=en:yanding:image_quality_evaluation:tools:lidar:angular_resolution&rev=1783670592&do=diff FIXME This page is not fully translated, yet. Please help completing the translation. (remove this paragraph once the translation is finished) Angular Resolution 1. What is Angular Resolution? Angular resolution refers to the angle formed by the central axes of two adjacent laser detection points at the ranging center during the scanning and detection process of a LiDAR. Depending on the scanning direction, it can be divided into $\Delta L$$\theta$$$\Delta L = d \cdot \tan(\theta) \approx … text/html 2026-07-10T08:03:13+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.yanding.com/doku.php?id=en:yanding:image_quality_evaluation:tools:lidar:fmcw&rev=1783670593&do=diff FIXME This page is not fully translated, yet. Please help completing the translation. (remove this paragraph once the translation is finished) Frequency Modulated Continuous Wave (FMCW) 1. Definition and Principles: Frequency Modulated Continuous Wave (FMCW)$\Delta t$$\Delta t/2$$c$$3 \times 10^8 \, \text{m/s}$$$r = \frac{\Delta t}{2} \times c$$$f_d$$\lambda$$$v = \frac{f_d \times \lambda}{2}$$ text/html 2026-07-10T08:03:11+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.yanding.com/doku.php?id=en:yanding:image_quality_evaluation:tools:lidar:lidar_overview&rev=1783670591&do=diff FIXME This page is not fully translated, yet. Please help completing the translation. (remove this paragraph once the translation is finished) LiDAR 1. What is LiDAR? LiDAR (Light Detection and Ranging) is an active sensing technology that acquires precise dimensions and spatial configurations of targets by emitting laser beams and analyzing the echo signals (e.g., Time of Flight (ToF) or frequency difference (FMCW)). Compared to passive imaging solutions that rely on ambient light (such a… text/html 2026-07-10T08:03:12+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.yanding.com/doku.php?id=en:yanding:image_quality_evaluation:tools:lidar:point_cloud&rev=1783670592&do=diff FIXME This page is not fully translated, yet. Please help completing the translation. (remove this paragraph once the translation is finished) Point Cloud 1. Definition: A point cloud is a collection of points acquired in 3D space and output by LiDAR. By recording the reflection of laser pulses off object surfaces, it translates the geometric shapes of the physical world into a massive set of discrete spatial coordinate points. It serves as the core foundational data for environment percep… text/html 2026-07-10T08:03:11+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.yanding.com/doku.php?id=en:yanding:image_quality_evaluation:tools:lidar:ranging_capability&rev=1783670591&do=diff FIXME This page is not fully translated, yet. Please help completing the translation. (remove this paragraph once the translation is finished) Ranging Capability I. Introduction Ranging capability is a key fundamental metric for evaluating the detection performance of $P_t$$A_r$$\alpha$$R$$\sqrt{\rho}$$R \propto \sqrt{\rho}$$$P_r = P_t \cdot \frac{A_r}{R^2} \cdot \rho \cdot \eta_{sys} \cdot \exp(-2\alpha R)$$$P_r$$P_t$$A_r$$R$$\rho$$\eta_{sys}$$\alpha$ text/html 2026-07-10T08:03:13+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.yanding.com/doku.php?id=en:yanding:image_quality_evaluation:tools:lidar:tof&rev=1783670593&do=diff FIXME This page is not fully translated, yet. Please help completing the translation. (remove this paragraph once the translation is finished) Time of Flight (ToF) Time of Flight (ToF) is a sensing technology that acquires the depth or distance of a target object by measuring the time required for light, sound, or particles to travel a certain distance through a medium.$\Delta t$$ c $$$d = \frac{c \cdot \Delta t}{2}$$