Philosophy and key features of 'Hodoyoshi' concept for optical remote sensing using 50kg class satellites
Philosophy and key features of 'Hodoyoshi' concept for optical remote sensing using 50kg class satellites
复制标题
使用 50 公斤级卫星进行光学遥感的“Hodoyoshi”概念的理念和主要特征
DOI：
10.1117/12.869499
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发表时间：
2010
影响因子：
1.1
通讯作者：
S. Nakasuka
中科院分区：
文献类型：
--
作者：
A. Enokuchi;N. Takeyama;Y. Nakamura;Y. Nojiri;N. Miyamura;A. Iwasaki;S. Nakasuka
传统上，遥感任务是通过在巨大的卫星上使用具有极高可靠性的星载光学传感器来执行的。另一方面，用于遥感任务的小型卫星最近得到了大力发展，并在世界各地投入使用。本文介绍了日本基于“Hodoyoshi”（日语中的“合理”）可靠性工程的纳米卫星（10 kg至50 kg）的发展概念，其目标是光学传感器、总线和卫星的成本效益设计。这个概念被命名为“Hodoyoshi”概念。我们专注于理念和概念的关键特征。这些都是方便地适用于纳米卫星上的光学传感器的发展。作为主要优势，基于“Hodoyoshi”概念的光学传感器在波长带的可选择性、对所需地面样品距离的适应性以及在广泛的环境温度范围内的最佳性能方面是“灵活的”。上述第一和第二特征可以通过将光学传感器的功能合理地划分为模块化的功能组来实现。第三个特点成为可能，通过采用消热复消色差光学设计。通过利用这些特点，光学传感器的开发成为可能，而无需关于发射器或轨道的确切信息。此外，这一理念导致真正快速交付用于遥感任务的纳米卫星。在这一概念的基础上，我们正在开发纳米卫星技术和五颗纳米卫星，以在一个为期四年的政府资助项目中实现这一概念。本文还报道了第一颗卫星上光学敏感器的规格。
Remote sensing missions have been conventionally performed by using satellite-onboard optical sensors with extraordinarily high reliability, on huge satellites. On the other hand, small satellites for remote-sensing missions have recently been developed intensely and operated all over the world. This paper gives a Japanese concept of the development of nano-satellites(10kg to 50kg) based on "Hodoyoshi" (Japanese word for "reasonable") reliability engineering aiming at cost-effective design of optical sensors, buses and satellites. The concept is named as "Hodoyoshi" concept. We focus on the philosophy and the key features of the concept. These are conveniently applicable to the development of optical sensors on nano-satellites. As major advantages, the optical sensors based on the "Hodoyoshi" concept are "flexible" in terms of selectability of wavelength bands, adaptability to the required ground sample distance, and optimal performance under a wide range of environmental temperatures. The first and second features mentioned above can be realized by dividing the functions of the optical sensor into modularized functional groups reasonably. The third feature becomes possible by adopting the athermal and apochromatic optics design. By utilizing these features, the development of the optical sensors become possible without exact information on the launcher or the orbit. Furthermore, this philosophy leads to truly quick delivery of nano-satellites for remote-sensing missions. On the basis of the concept, we are now developing nano-satellite technologies and five nano-satellites to realize the concept in a four-year-long governmentally funded project. In this paper, the specification of the optical sensor on the first satellite is also reported.