s-taka.org

Satoshi Takahashi, Hiroshima City University

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  • November 2020
    • Low-cost four-frequency-band GNSS antennas
  • October 2020
    • USB device port identification on Linux
    • New evaluation board for Allystar HD9310
    • Test release of RTK reference station observation data archive
  • September 2020
    • Introduction of GNSS receiver NovAtel OEM729
    • Attaching GNSS external antenna connector to Sony Spresense
    • Quasi-zenith satellite CLAS augmentation information extraction using Allystar HD9310 Option C
    • Azimuth determination of installing survey grade GNSS antenna
    • LED alarm light using Raspberry Pi Zero WH
  • August 2020
    • Invited talk at the Institute of Electronics, Information and Communication Engineers Integrated Circuit Study Group (held online)
  • July 2020
    • Participation in the 2020 Convention of the Institute of Positioning, Navigation and Timing of Japan(held online)
  • June 2020
    • Allystar HD9310 Firmware Update
    • Reception of DRM broadcasting signals using software defined radio KiwiSDR
  • May 2020
    • Quasi-zenith satellite Michibiki's positioning library CLASLIB (Part 3 VRS-RTK positioning by ssr2obs)
    • Confirmation of SBAS signal over Hiroshima
    • Quasi-zenith satellite Michibiki's positioning library CLASLIB (Part 2 ssr2osr)
    • Quasi-zenith satellite Michibiki's positioning library CLASLIB (Part 1 Understanding the configuration)
  • April 2020
    • Presentation at cluster Hiroshima LT
    • Texas Instruments 60 GHz millimeter-wave radar evaluation kit experiment
    • Three dimensional spatial range measurement with Livox Horizon LiDAR
  • March 2020
    • Parametric speaker experiment
    • Four DC/DC converter experiments
    • AC power control by solid state relay
    • Microcomputers I use
    • Observation of optical spectrum using microspectrometer C12880MA and Analog Discovery 2
    • Battery charging with BQ25890, a Texas Instruments' IC
    • Remaining capacity estimation of Lithium-ion battery using Maxim MAX17201
  • February 2020
    • Satellite positioning with GNSS-SDR on Debian running by VMware Player (failure)
  • January 2020
    • Measurement of internal resistance of dry battery
  • December 2019
    • Presentation at ITE winter convention
    • GPS signal reception with GNSS SDR
    • Coaxial cable switch
  • November 2019
    • Powering to Latte Panda with JST PH 4P connector
    • QZSS's Disaster and Crises Management Report signal reception with Spresense, a Sony's board microcomputer
    • Experiment of Allystar HD9310
    • Upgrade of RTK reference station antenna
    • Exhibit at Hiroshima IT Exhibition 2019
    • Presentation at technical committee of IEICE Communication Systems at Kirishima
  • October 2019
    • GPS/GNSS symposium of IPNTJ
  • September 2019
    • Presentation at IEICE society conference
  • August 2019
    • First trial of conductive wear hitoe
  • July 2019
    • Diagnostics of USB-C cables
    • Presentation at conference of IEICE Technical Committee of Communication Systems
  • June 2019
    • Dual frequency RTK reference station
    • Use of Emlid Reach observation data with RTKLIB
  • May 2019
    • Invited talk at technical committee of IEICE Communication Quality
    • First trial of CLAS positioning of QZSS
    • Participation of annual conference of the Institute of Positioning, Navigation and Timing in Japan (IPNTJ)
  • March 2019
    • Trial of receiving DRM broadcasting in Japan (failure)
  • February 2019
    • Configuration of GNSS module ZED-F9P with u-center
    • First trial of Yamaha HEARTalk UU-002
  • January 2019
    • Surface mount version of LoRa wireless communication module ES920LR
    • Purchase of the latest dual frequency GNSS positioning module u-blox ZED-F9P board
  • December 2018
    • Rental of "Michibiki" compatible receiver from Quasi-Zenith Satellite System Service Co., Ltd.
  • November 2018
    • First trial of realtime delivery of MADOCA product
    • First trial of LTE-M communication carrier type LPWA
    • Reception of one-segment broadcasting with GNU Radio and gr-isdbt on VirtualBox with vagrant
    • Trial of measurement of temperature, humidity, air pressure, and accelerations with Sigfox Una Shield V2S
  • October 2018
    • Dual frequency positioning of Chinese smartphone Xiaomi Mi8 with Android GNSS Analysis Tool
  • September 2018
    • Trial of next-generation nonvolatile memory FeRAM
    • Trial of M5Stack with ESP32
    • Trial of Spresense, a Sony's board microcomputer
    • Trial of python with Arty Z7, an FPGA board
    • Radiowave sensing with KiwiSDR
    • Trial of machine vision with OpenMV
  • August 2018
    • Experiment on block chain with temperature and humidity data
    • Let's try RTK of several centimeter order positioning with an internet-connected PC
    • How to make an RTK reference station
    • Deep Sleep Mode on ESP-WROOM-32
    • GRUB trouble on Linux after partition movement
    • Use of Sigfox with Una Shiled V2S
    • Panorama photo of RTK reference station at Hiroshima City University (PC only)
  • July 2018
    • Raspberry Pi Zero WH with cellular network connection
    • Trouble in RTK reference station
    • Presentation at ICTF 2018 in Graz, Austria
    • Noise sensing with RF Explorer
  • June 2018
    • Lecture at Hiroshima version IoT Lightning Talk (IoTLT Hiroshima) Vol.9
    • Temperature, humidity, and lightning sensor experiments
  • March 2018
    • Lecture and demonstration at Wireless IoT Seminar in Hiroshima
  • January 2018
    • Placement of RTK reference station
  • November 2016
    • Lab travel in Miyajima
  • October 2016
    • Radio experiment in Ujina port of Hiroshima