Evaluation of reachability and promptness in delivering disaster and evacuation information using an augmentation signal of the Quasi-Zenith Satellite System

Daisuke Iwaizumi, Naohiko Kohtake

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Citation (Scopus)

Abstract

There can be many failures in the ground communication infrastructure following an earthquake such as the Great East Japan Earthquake. In such an event, disaster management agencies may not be able to alert residents to a Tsunami Warning or provide evacuation information. Consequently we have developed the RedRescue system, which broadcasts disaster notifications and evacuation information using the Ll-SAIF signal - an augmentation signal of the Quasi-Zenith Satellite System (QZSS). A feature of RedRescue is that, in the case of a breakdown in ground communication, disaster and evacuation information can be received using a GNSS receiver (e.g., a smartphone) without using a special device such as a satellite phone. This paper reports on the results of simulating the effectiveness of the system in transmitting disaster and evacuation information in terms of reachability and promptness. Specifically, we compared the performances of RedRescue and existing systems such as the Emergency Broadcast systems. For reachability of information, the RedRescue has a greater reach than the Emergency Broadcasts for the same reception ratio dealing with the arrival time of a tsunami. We defined the promptness of information as time taken to reach a determined percentage of the evacuees who received the information For promptness of information, RedRescue reaches the determined percentage faster than the Emergency Broadcasts. Hence, when notifying users of a disaster, we found that RedRescue was more effective than existing systems in terms of reachability and promptness because it was able to transmit information to many users faster than existing systems without being affected by the position of the user.

Original languageEnglish
Title of host publication64th International Astronautical Congress 2013, IAC 2013
PublisherInternational Astronautical Federation, IAF
Pages3058-3064
Number of pages7
ISBN (Print)9781629939094
Publication statusPublished - 2013 Jan 1
Externally publishedYes
Event64th International Astronautical Congress 2013, IAC 2013 - Beijing, China
Duration: 2013 Sep 232013 Sep 27

Publication series

NameProceedings of the International Astronautical Congress, IAC
Volume4
ISSN (Print)0074-1795

Other

Other64th International Astronautical Congress 2013, IAC 2013
CountryChina
CityBeijing
Period13/9/2313/9/27

ASJC Scopus subject areas

  • Aerospace Engineering
  • Astronomy and Astrophysics
  • Space and Planetary Science

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  • Cite this

    Iwaizumi, D., & Kohtake, N. (2013). Evaluation of reachability and promptness in delivering disaster and evacuation information using an augmentation signal of the Quasi-Zenith Satellite System. In 64th International Astronautical Congress 2013, IAC 2013 (pp. 3058-3064). (Proceedings of the International Astronautical Congress, IAC; Vol. 4). International Astronautical Federation, IAF.