# UwbGrid UWB report message contains the grid information measured by an ultra-wideband positioning system, such as Pozyx or NXP Rddrone. [source file](https://github.com/PX4/PX4-Autopilot/blob/main/msg/UwbGrid.msg) ```c # UWB report message contains the grid information measured by an ultra-wideband positioning system, # such as Pozyx or NXP Rddrone. uint64 timestamp # time since system start (microseconds) uint16 initator_time # time to synchronize clocks (microseconds) uint8 num_anchors # Number of anchors float64[4] target_gps # GPS position of target of the UWB system (Lat / Lon / Alt / Yaw Offset to true North) # Grid position information # Position in x,y,z in (x,y,z in centimeters NED) # staring with POI and Anchor 0 up to Anchor 11 int16[3] target_pos # Point of Interest, mostly landing Target x,y,z int16[3] anchor_pos_0 int16[3] anchor_pos_1 int16[3] anchor_pos_2 int16[3] anchor_pos_3 int16[3] anchor_pos_4 int16[3] anchor_pos_5 int16[3] anchor_pos_6 int16[3] anchor_pos_7 int16[3] anchor_pos_8 int16[3] anchor_pos_9 int16[3] anchor_pos_10 int16[3] anchor_pos_11 ``` --- # 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://px4.gitbook.io/px4-user-guide/development/middleware/msg_docs/uwbgrid.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.