~/talk

Exploring LoRa for Long-range Through-wall Sensing

on YouTube 06m
Talkat UbiComp / ISWC 2020 · 2020-09-12..09-17· [embedded-and-hardware, iot]

speakers

name:Fusang Zhang
links:none on file
name:Zhaoxin Chang
links:none on file
name:Kai Niu
links:none on file
name:Jie Xiong
links:none on file
name:Beihong Jin
links:none on file
name:Qin Lv
links:none on file
name:Daqing Zhang
links:none on file

resources

video:https://youtu.be/rkG-9bRCL_0
slides:none on file

summary

Presents a concrete claim that LoRa CSS signals enable long-range contactless sensing and demonstrates a working prototype: a Semtech LoRa transmitter on an Arduino and a USRP gateway with two antennas running GNU Radio. Uses a ratio of dual-antenna signals to remove chirp and phase errors and extracts target movement from phase changes to infer distance and direction. Shows sensing of a 5 mm displacement at 25 m, respiration at 25 m (15 m through a wall), and walking tracking up to 30 m.

AI-written summary · about

chapters (4)

  1. 0:00Intro
  2. 0:20Background
  3. 3:58Experiments
  4. 5:13Demo

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