MICRO/NANOSATELLITE SOCIAL UTILIZATION DESIGN FOR ILLEGAL WASTE DISPOSAL DETECTION

摘要

Illegal waste disposal is now serious problem in Japan. There have been many reports that a company or businessperson illegally dumps the waste in an out-of-sight place such as mountains, sea coast, or deserted island. The wastenot only for spoiling the scenery, but also poisoning the environment with contained toxic substances. Japaneseministry of the environment has taken measured by revising a ministerial ordinance and budgeting for provision forprefectural and city governments. However many illegal waste is left because the cost of recovery is enormous. Earlydetection of a waste and perpetrator is required to limit the increase of waste. In recent years, satellite image isconsidered to use monitoring a waste disposal point. Japanese Hyogo prefecture government and a remote sensinggroup conducted a cooperative projects which use Advanced Land Observing Satellite (ALOS) image for detectingan illegal waste disposal in 2009. It is proved that 2.5m resolution image can be used for detecting a change ofscenery such as tree-clearing. Utilization of a microanosatellite in a practical system is anticipated recently.Microanosatellite can be used for illegal waste disposal detection system. The development of smaller size satellitewhich is called microanosatellite has been started at many universities in last decade. Microanosatellitedevelopment cost is a few percent of a bigger satellite cost. Great reduction of the cost brings a satellite into real use.On this research practical system for deterring illegal waste disposal which use microanosatellite is studied. Thesystem contains satellite constellation, satellite operation and image processing team, and municipal governmentteam. Satellite constellation is constructed with about 60 kg microanosatellites. 2.5m resolution imager is required.A satellite observes forest in middle area of Japan which includes 7 prefectures. Irregularity of ground surface andsurface material change is analyzed with processing satellite images. Local officer conduct a field survey andimplement a legal action. To conduct both operation, satellite observation and field survey, is very important.Satellite observation helps to plan survey point and timing. Satellite image is also useful to share the situation ofillegal waste issue with public and government. Wide recognition of the subsistent of satellite and its benefit acts as adeterrent.