Observation sequences and onboard data processing unit of Japanese Venus observation program, Planet-C. - Makoto Suzuki; Takeshi Imamura; Takahiro Yamada; Masato Nakamura; Munetaka Ueno; Hiroki Hihara; Masahiro Hamai; Satoshi Ichikawa; Jun Takada; Shuji Senda (IGARSS, 2007)