초록 ▼

A vehicle positioning and data integrating process and system can substantially solve the problems encountered in avionics system integration, which employs integrated global positioning system/inertial measurement unit enhanced with altitude measurements to derive vehicle position, velocity, attitu

A vehicle positioning and data integrating process and system can substantially solve the problems encountered in avionics system integration, which employs integrated global positioning system/inertial measurement unit enhanced with altitude measurements to derive vehicle position, velocity, attitude, and body acceleration and rotation information. A vehicle positioning and data integrating system comprises navigation sensors and an IMU interface and preprocessing board, an altitude interface and processing board, a navigation processing board, a shared memory card, a bus arbiter, a control board, and a bus interface. The control board distributes navigation data to flight management system, flight control system, automatic dependent aurveillance, cockpit display, enhanced ground proximity warning system, weather radar, and satellite communication system.

대표청구항 ▼

[What is claimed is:] [1.]an inertial measurement unit (IMU) for providing inertial measurements including body angular rates and specific forces;a global positioning system (GPS) processor for providing GPS measurements including pseudorange, carrier phase, and Doppler shift;an altitude measurement

[What is claimed is:] [1.]an inertial measurement unit (IMU) for providing inertial measurements including body angular rates and specific forces;a global positioning system (GPS) processor for providing GPS measurements including pseudorange, carrier phase, and Doppler shift;an altitude measurement device for providing vehicle altitude measurement;a central navigation and control processor for processing said GPS measurements, said inertial measurements, and said vehicle altitude measurement to derive a navigation solution, which are connected with said GPS processor, said IMU, said altitude measurement device, and a data bus, comprising an IMU interface and preprocessing board, an altitude interface and processing board, a navigation processing board, a shared memory card for storing data, a bus arbiter for monitoring and managing a common bus and a data bus, and a control board for controlling the data stream mutually connected together via said common bus; whereinsaid navigation processing board is connected with said GPS processor and a data bus for receiving said GPS measurements,said IMU interface and preprocessing board is connected with said IMU for converting said inertial measurements received from said IMU into digital data of body acceleration and rotation which are sent to said navigation processing board and said control board via said common bus,said altitude interface and processing board is connected with said altitude measurement device for converting said altitude measurement received from said altitude measurement device to mean sea level height in digital data type which are passed to said navigation processing board and said control board through said common bus, andsaid bus interface is connected between said control board and said data bus.