This paper presents a practical application software , the cad system for embroidery design , which has the capabilities of scanning pictures or embroidery products , importing the skeletons of embroidery drafts , creating key points of the outlines of the those drafts , creating stitch points of those embroidery drafts from those key points , converting stitch points information into proper forms and so on 本论文对刺绣cad系统的各个方面做了较为详细的探讨，着重介绍了系统的软件设计过程和生成刺绣画稿所需的各种算法的实现方法。对于系统的输入输出、图形的编辑修改以及文字编针也进行了一些简要的叙述。
After analyzing the existing ambiguity resolution methods the dissertation investigates the baseline rotation method based on the antenna - swap idea , and develops the fixed axis rotation maximum - minimum method ? farmm and the equivalent rotation maximum - minimum method ? ermm applicable for static basement and moving vehicle respectively . the former lowers the demands on rotation device while the latter improves the flexibility of antennae installation . meanwhile the dissertation also brings forward an ambiguity function search method which needs only one single epoch data with the outer aided information , and investigates the accuracy requirements for the assistant pointing information 其次,通过与gps等多星系统定向关键技术的对比分析,指出双星定向模糊度确定的难度;在分析现有模糊度求解方法的基础之上,研究了基于交换天线思想的转动基线模糊度确定方法,并提出了适合于静基座的定轴转动极大/极小值farmm法,以及适合于地面运动载体的等效转动极大/极小值ermm法,前者降低了对转动机构的要求,后者则提高了天线安装的灵活性;同时,提出了一种借助外部辅助信息的模糊度函数搜索法实现单历元双星定向,并分析了对外部辅助单轴姿态信息的精度要求。
