@techreport{oai:jaxa.repo.nii.ac.jp:00039706,
 author = {山脇, 功次 and Yamawaki, Koji},
 month = {Feb},
 note = {本報告は、GPS(全地球的位置決定システム)のような測位システムが将来にわたって継続して必要になることを想定し、GPSを発展的に継承しうる測位システムの概念設計検討を目的として実施したシステム解析と、測位システムとしての性能を評価するために実施したシミュレーション結果について述べた。まず、衛星航法の現状、原理について述べ、測位方式とその精度について解析的な検討、定式化を行った。ついで、各種の典型的な衛星配置例とそれらの利害得失、衛星配置と測位精度の関係、測位精度を高めるための地上局支援、ユーザ端末の高機能化について幅広く検討した。また、クロック同期型測位方式とGPSのような非同期型測位方式の共存と重み係数を可変とする最小自乗測位方式を検討した。このアルゴリズムから、各種測位方式の測位精度を一般的に表現する測位劣化指数(DOP)を求めた。, Presumed that navigation system such as GPS (Global Positioning System) is necessitated continuously over the future, this paper reported the system analysis conducted to study concept design of the navigation system which is possible to succeed developmentally GPS and simulation result conducted to evaluate performance of the system. First the present condition and the principle of satellite navigation are described, and navigation method and its precision are studied analytically and formulated. After that, following studies are conducted: varieties of typical satellite constellations samples and their tradeoffs, relation between the constellations and navigation accuracy, ground station support to enhance the precision, and intelligent user terminals. Following items are also studied: coexistence of the navigation method based on clock synchronization and asynchronous navigation method such as GPS, and navigation method based on the weighting coefficients variable least-squares method. From the algorithm, DOP (Dilution of Precision) is determined, which expresses generally the precision of various navigation method., 資料番号: AA0000268000, レポート番号: NASDA-TMR-960001},
 title = {衛星航法の基礎理論とその応用},
 year = {1996}
}