| 2011 | IGARSS | Performance of anomalous signal detection with HMM approach in electromagneticwave observation using moving window. | Yoshinao Ito, Akitoshi Itai, Hiroshi Yasukawa, Ichi Takumi, Masayasu Hata |
| 2010 | IGARSS | A study on anomalous signal detection using HMM for ELF electromagnetic wave. | Yoshinao Ito, Akitoshi Itai, Hiroshi Yasukawa, Ichi Takumi, Masayasu Hata |
| 2009 | IGARSS | Detection and Radiation Area Estimation of Anomalous Environmental Electromagnetic Wave Related to Earthquake Precursor. | Tokiyasu Sato, Ichi Takumi, Masayasu Hata, Hiroshi Yasukawa |
| 2008 | IGARSS | Improvement of Earthquake Prediction by using Global Signal Elimination from Environmental Electromagnetic Signals. | Motoaki Mouri, Arao Funase, Ichi Takumi, Andrzej Cichocki, Hiroshi Yasukawa, Masayasu Hata |
| 2008 | IGARSS | Detection of Anomalous Environmental Electromagnetic Wave by Statistical Property in Magnetic Field Azimuth. | Tokiyasu Sato, Ichi Takumi, Masayasu Hata, Hiroshi Yasukawa |
| 2003 | IGARSS | Study on analysis of EM radiation source based on eigenvector. | Shuhei Murakami, Ichi Takumi, Masayasu Hata, Hiroshi Yasukawa |
| 2003 | IGARSS | The precursor signal detection from electromagnetic waves for predicting great earthquakes using Kalman filter. | Shinji Niwa, Hiroshi Yasukawa, Ichi Takumi, Masayasu Hata |
| 2003 | IGARSS | Study on locating simulation of EM radiation source and transfer characteristic in ELF electromagnetic field. | Susumu Saito, Ichi Takumi, Masayasu Hata, Hiroshi Yasukawa |
| 2003 | IGARSS | A source estimation method to locate anomalous electromagnetic source in ELF band with global noise separation by ICA. | Nobukazu Kodera, Ichi Takumi, Masayasu Hata, Hiroshi Yasukawa |
| 2002 | IGARSS | Clustering of EM radiation source based on eigenvector. | Ichi Takumi, Shuhei Murakami, Akio Shimura, Masayasu Hata, Hiroshi Yasukawa |
| 2002 | IGARSS | Estimation of EM radiation source in ELF band. | Ichi Takumi, Shoichi Saito, Akio Shimura, Masayasu Hata, Hiroshi Yasukawa |