| 摘要 |
<P>PROBLEM TO BE SOLVED: To solve the problem that a walkie-talkie, a cellular phone, or the like are conventionally used for distress in the mountain or ocean, wherein many calls for help are made due to a dead zone, the battery use up, or the like, and especially it is difficult to give information on the position thereof in a forest zone. Ž<P>SOLUTION: By using this balloon for life saving, the location of the user is early found from a distance, and life saving activity can be performed early. Ž<P>COPYRIGHT: (C)2010,JPO&INPIT Ž
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