METHOD AND APPARATUS FOR DIFFERENTIAL GLOBAL POSITIONING SYSTEM (DGPS)-BASED REAL TIME ATTITUDE DETERMINATION (RTAD)
First Claim
Patent Images
1. A differential global positioning system (DGPS) processor, comprising:
- an almost fixed integer ambiguity (AFIA) module for generating, in real-time, a multiple dimensional state vector of integer ambiguities and multiple dimensional corrections using double difference (DD) measurements for pseudo-range (PR) and carrier phase (CP) pairs generated from at least three global positioning system (GPS) receivers.
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Abstract
A differential global positioning system (DGPS) processor can include an almost fixed integer ambiguity (AFIA) module for generating in real-time a multiple dimensional state vector of integer ambiguities and multiple dimensional corrections. The AFIA module can use double difference (DD) measurements for pseudo-range (PR) and carrier phase (CP) pairs generated from at least three global positioning system (GPS) receivers. A DGPS processor can be included in a high data rate real time attitude determination (RTAD) system to achieve high heading accuracy with high integrity.
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Citations
20 Claims
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1. A differential global positioning system (DGPS) processor, comprising:
an almost fixed integer ambiguity (AFIA) module for generating, in real-time, a multiple dimensional state vector of integer ambiguities and multiple dimensional corrections using double difference (DD) measurements for pseudo-range (PR) and carrier phase (CP) pairs generated from at least three global positioning system (GPS) receivers. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A method for determining attitude data in real time, comprising:
generating in real time a multiple dimensional state vector of integer ambiguities and multiple dimensional corrections using double difference (DD) measurements for pseudo-range (PR) and carrier phase (CP) pairs generated from at least three global positioning system (GPS) receivers. - View Dependent Claims (10, 11, 12, 13, 14)
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15. A system for facilitating real time attitude determination (RTAD), comprising:
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a differential global positioning system (DGPS) processor for generating in real time periodic attitude data from global positioning system (GPS) receiver data or GPS-aided navigation data using a multiple dimensional state vector of integer ambiguities and multiple dimensional corrections, wherein the GPS receiver data is generated from at least three GPS receivers and the GPS-aided navigation data combines GPS data of each GPS receiver with inertial measurement unit (IMU) data, and the multiple dimensional state vector is generated from at least two pairs of double difference (DD) pseudo-range (PR) and carrier phase (CP) measurements. - View Dependent Claims (16, 17, 18, 19, 20)
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Specification