摘要：In this article, an ad hoc microsat constellation based on secondary launches is proposed to meet the demands for the constellation characteristics. Research on its structural design and characteristics is carried out. First, constellation characteristic indices are proposed, including the coverage characteristics, health stability, and aggregation degrees, in order to analyze the feasibility of ad hoc microsat constellations. Then, several characteristic indices of ad hoc microsat constellations are compared with those of the traditional constellation, “Walker.” Research results show that ad hoc micro satellite constellation based on secondary launching not only meets the requirements of the traditional constellations but also saves the launch costs, a feature which has important practical significance.
关键词：Ad hoc constellation; secondary launch; aggregation degree; coverage
