Attitude Determination Methods Using Pseudolite Signal Phase Measurements
نویسندگان
چکیده
منابع مشابه
Attitude Determination Methods Using Pseudolite Signal Phase Measurements
In this paper, new attitude determination algorithms using pseudolite signal phase measurements are developed and presented with realistic simulations. Pseudolite signals are used to replace GPS signals which are often not available due to blocking by nearby large structures, for example a crew return vehicle under the International Space Station. A new observation model needs to be applied bec...
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If three or more GPS antennas are mounted properly on a platform and differences of GPS signals measurements are collected simultaneously, the baselines vectors between antennas can be determined and the platform orientation defined by these vectors can be calculated. Thus, the prerequisite for attitude determination technique based on GPS is to calculate baselines between antennas to millimete...
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Nowadays, navigation is an unavoidable fact in military and civil aerial transportations. The Global Positioning System (GPS) is commonly used for computing the orientation or attitude of a moving platform. The relative positions of the GPS antennas are computed using the GPS code and/or phase measurements. To achieve a precise attitude determination, Carrier phase observations of GPS requiring...
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The problem of indoor navigation using pseudolites is investigated and two different approaches, employing synchronous and asynchronous technologies, are considered. It is shown that synchronous pseudolite systems, commonly considered more accurate, seem to be unsuitable for deep indoor operations: in complex propagation environments, the synchronization required for metre level navigation is d...
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Carrier phase measurements are primary observations for GPS attitude determination. Although the satelliterelated errors can be virtually eliminated by forming single differences, the baseline-related errors, such as line biases, are still present in the single-differenced carrier phase measurements. It is, therefore, difficult to resolve the single-differenced integer ambiguities due to the li...
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ژورنال
عنوان ژورنال: Navigation
سال: 2006
ISSN: 0028-1522
DOI: 10.1002/j.2161-4296.2006.tb00378.x