@article{CTT100631750,
  author = {Sang Il Ko and Go Aikawa and Jun-ya Takayama and Shinji Ohyama},
  title = {A High-Precision RF Time-of-Flight Measurement Method based on Vernier Effect for Localization of Wireless Sensor Networks},
  journal = {Sensors & Transducers},
  year = 2011,
}

@article{CTT100631296,
  author = {高山潤也 and KOSANG IL and 大山真司},
  title = {一般化バーニア効果とRF伝播時間計測への応用},
  journal = {計測自動制御学会論文集},
  year = 2011,
}

@article{CTT100618998,
  author = {Sang Il Ko and Jun-ya Takayama and Shinji Ohyama},
  title = {Proposal of Generalized Vernier Effect and Its Practical Advantage for RF Time-of-Flight Ranging between Sensor Nodes in Wireless Sensor Networks},
  journal = {Sensors & Actuators A},
  year = 2011,
}

@inproceedings{CTT100631008,
  author = {Jun-ya Takayama and Hong Phuoc Thanh and Sang Il Ko and Shinji Ohyama},
  title = {Development of Prototype Sensor Nodes with High-accuracy Ranging for Localization on Wireless Sensor Networks},
  booktitle = {IEEE International Conference on Sensors 2011},
  year = 2011,
}

@inproceedings{CTT100626842,
  author = {西郷雄祐 and Sang-il Ko and 高山潤也 and 大山真司},
  title = {異なる動作周波数を用いたTWRに基づくRF距離計測},
  booktitle = {第28回センシングフォーラム資料},
  year = 2011,
}

@inproceedings{CTT100610744,
  author = {Sang Il Ko and Jun-ya Takayama and Shinji Ohyama},
  title = {Generalized Vernier Effect and its Application to Precise RF Time-of-Flight Measurement for Wireless Sensor Networks},
  booktitle = {Proceedings of IEEE International Conference on Sensors},
  year = 2010,
}

@inproceedings{CTT100610746,
  author = {KO SANG IL and 相川剛 and 高山潤也 and 大山真司},
  title = {一般化したバーニア効果による高精度伝播時間計測と無線センサネットワークへの応用},
  booktitle = {第27回センシングフォーラム資料},
  year = 2010,
}

@inproceedings{CTT100610743,
  author = {Sang Il Ko and Jun-ya Takayama and Shinji Ohyama},
  title = {Synch-Free RF Time-of-Flight Measurement System for Wireless Sensor Networks Based on Vernier Effect},
  booktitle = {Proceedings of SICE Annual Conference 2010},
  year = 2010,
}

@inproceedings{CTT100589340,
  author = {Sang Il Ko and Jun-ya Takayama and Shinji Ohyama},
  title = {Experimental Study on Time of Flight Measurement System Based on Vernier Effect},
  booktitle = {Proceedings of the 26th Sensor Symposium},
  year = 2009,
}

@inproceedings{CTT100589341,
  author = {高尚逸 and 高山潤也 and 大山真司},
  title = {バーニア効果に基づくRF飛行時間計測のための基礎的研究},
  booktitle = {第26回センシングフォーラム資料},
  year = 2009,
}

@inproceedings{CTT100589337,
  author = {Sang Il Ko and Jun-ya Takayama and Shinji Ohyama},
  title = {Short range measurement using RF signal propagation time based on venier effect},
  booktitle = {Proceedings of ICCAS-SICE},
  year = 2009,
}

@inproceedings{CTT100561063,
  author = {Sang Il Ko and J. Takayama and S. Ohyama},
  title = {A Novel RF Symmetric Double Sided Two Way Range Finder based on Vernier Effect},
  booktitle = {Proceedings of ICCAS 2008},
  year = 2008,
}