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Low-cost four-frequency-band GNSS antennas 9^th November 2020
USB device port identification on Linux 16^th October 2020
New evaluation board for Allystar HD9310 14^th October 2020
Test release of RTK reference station observation data archive 1^st October 2020
Introduction of GNSS receiver NovAtel OEM729 30^th September 2020
Attaching GNSS external antenna connector to Sony Spresense 29^th September 2020
Quasi-zenith satellite CLAS augmentation information extraction using Allystar HD9310 Option C 28^th September 2020
Azimuth determination of installing survey grade GNSS antenna 23^rd September 2020
LED alarm light using Raspberry Pi Zero WH 16^th September 2020
Invited talk at the Institute of Electronics, Information and Communication Engineers Integrated Circuit Study Group (held online) 30^th August 2020
Participation in the 2020 Convention of the Institute of Positioning, Navigation and Timing of Japan(held online) 17^th July 2020
Allystar HD9310 Firmware Update 22^nd June 2020
Reception of DRM broadcasting signals using software defined radio KiwiSDR 2^nd June 2020
Quasi-zenith satellite Michibiki's positioning library CLASLIB (Part 3 VRS-RTK positioning by ssr2obs) 10^th May 2020
Confirmation of SBAS signal over Hiroshima 9^th May 2020
Quasi-zenith satellite Michibiki's positioning library CLASLIB (Part 2 ssr2osr) 8^th May 2020
Quasi-zenith satellite Michibiki's positioning library CLASLIB (Part 1 Understanding the configuration) 7^th May 2020
Presentation at cluster Hiroshima LT 26^th April 2020
Texas Instruments 60 GHz millimeter-wave radar evaluation kit experiment 16^th April 2020
Three dimensional spatial range measurement with Livox Horizon LiDAR 14^th April 2020
Parametric speaker experiment 16^th March 2020
Four DC/DC converter experiments 13^th March 2020
AC power control by solid state relay 12^th March 2020
Microcomputers I use 11^st March 2020
Observation of optical spectrum using microspectrometer C12880MA and Analog Discovery 2 10^th March 2020
Battery charging with BQ25890, a Texas Instruments' IC 7^th March 2020
Remaining capacity estimation of Lithium-ion battery using Maxim MAX17201 6^th March 2020
Satellite positioning with GNSS-SDR on Debian running by VMware Player (failure) 19^th February 2020
Measurement of internal resistance of dry battery 23^rd January 2020
Presentation at ITE winter convention 13^th December 2019
GPS signal reception with GNSS SDR 11^st December 2019
Coaxial cable switch 2^nd December 2019
Powering to Latte Panda with JST PH 4P connector 29^th November 2019
QZSS's Disaster and Crises Management Report signal reception with Spresense, a Sony's board microcomputer 23^rd November 2019
Experiment of Allystar HD9310 22^nd November 2019
Upgrade of RTK reference station antenna 20^th November 2019
Exhibit at Hiroshima IT Exhibition 2019 16^th November 2019
Presentation at technical committee of IEICE Communication Systems at Kirishima 2^nd November 2019
GPS/GNSS symposium of IPNTJ 19^th October 2019
Presentation at IEICE society conference 14^th September 2019
First trial of conductive wear hitoe 30^th August 2019
Diagnostics of USB-C cables 25^th July 2019
Presentation at conference of IEICE Technical Committee of Communication Systems 6^th July 2019
Dual frequency RTK reference station 19^th June 2019
Use of Emlid Reach observation data with RTKLIB 12^th June 2019
Invited talk at technical committee of IEICE Communication Quality 30^th May 2019
First trial of CLAS positioning of QZSS 29^th May 2019
Participation of annual conference of the Institute of Positioning, Navigation and Timing in Japan (IPNTJ) 20^th May 2019
Trial of receiving DRM broadcasting in Japan (failure) 1^st March 2019
Configuration of GNSS module ZED-F9P with u-center 27^th February 2019
First trial of Yamaha HEARTalk UU-002 4^th February 2019
Surface mount version of LoRa wireless communication module ES920LR 24^th January 2019
Purchase of the latest dual frequency GNSS positioning module u-blox ZED-F9P board 15^th January 2019
Rental of "Michibiki" compatible receiver from Quasi-Zenith Satellite System Service Co., Ltd. 1^st December 2018
First trial of realtime delivery of MADOCA product 28^th November 2018
First trial of LTE-M communication carrier type LPWA 27^th November 2018
Reception of one-segment broadcasting with GNU Radio and gr-isdbt on VirtualBox with vagrant 26^th November 2018
Trial of measurement of temperature, humidity, air pressure, and accelerations with Sigfox Una Shield V2S 13^th November 2018
Dual frequency positioning of Chinese smartphone Xiaomi Mi8 with Android GNSS Analysis Tool 26^th October 2018
Trial of next-generation nonvolatile memory FeRAM 7^th September 2018
Trial of M5Stack with ESP32 6^th September 2018
Trial of Spresense, a Sony's board microcomputer 5^th September 2018
Trial of python with Arty Z7, an FPGA board 4^th September 2018
Radiowave sensing with KiwiSDR 3^rd September 2018
Trial of machine vision with OpenMV 2^nd September 2018
Experiment on block chain with temperature and humidity data 29^th August 2018
Let's try RTK of several centimeter order positioning with an internet-connected PC 27^th August 2018
How to make an RTK reference station 26^th August 2018
Deep Sleep Mode on ESP-WROOM-32 24^th August 2018
GRUB trouble on Linux after partition movement 20^th August 2018
Use of Sigfox with Una Shiled V2S 19^th August 2018
Panorama photo of RTK reference station at Hiroshima City University (PC only) 15^th August 2018
Raspberry Pi Zero WH with cellular network connection 23^rd July 2018
Trouble in RTK reference station 18^th July 2018
Presentation at ICTF 2018 in Graz, Austria 15^th July 2018
Noise sensing with RF Explorer 2^nd July 2018
Lecture at Hiroshima version IoT Lightning Talk (IoTLT Hiroshima) Vol.9 29^th June 2018
Temperature, humidity, and lightning sensor experiments 21^st June 2018
Lecture and demonstration at Wireless IoT Seminar in Hiroshima 7^th March 2018
Placement of RTK reference station 1^st January 2018
Lab travel in Miyajima 23^rd November 2016
Radio experiment in Ujina port of Hiroshima 19^th October 2016