可分享版SiliconLabs-使用蓝牙信道探测技术实现精准距离测量

Silicon Labs蓝牙信道探测技术特色和应用方向周耀军/ David Zhou主任现场应用工程师蓝牙信道探测概论Channel Sounding OverviewChannel Sounding OverviewMeasure distance between two devices using ▪Phase-based Ranging (PBR)▪Round Trip Time (RTT)RTT and PBR operates across 2.4 GHz band▪Standard specifies up to 72 channels▪Random hopping pattern Connection-Oriented 2-way ranging with two roles▪Initiator: device that wishes to calculate distance from itself to ▪another device▪Reflector: device responding to initiatorSupports up to 4 antenna paths between devices ▪8 possible antenna combinationsMultiple security features included in the standardCan be combined with Angle of Arrival / Departure (AoA/AoD)▪Enables position estimation with single initiator/reflector pairBluetooth SIG Specification adoption expected in 2024▪Draft Channel Sounding specification at: https://www.bluetooth.com/specifications/specs/channel-sounding-cr-pr/What’s notincluded in the spec:▪Distance measurement algorithm recommendations and optimizationsWhat’s incl