Small navigation receiver applicable to low-earth-orbit satellite

Abstract

The invention discloses a small navigation receiver applicable to a low-earth-orbit satellite. The small navigation receiver has the advantages that integral design integrating multiple modules such as a channel module and a passage module; the FPGA+DSP architecture of a traditional navigation receiver is broken through, core component's dependence on import is eliminated, a radio frequency chip and base band SoC chip group is applied in an in-orbit manner, and satellite borne navigation production core function chips and domestic design are achieved; a navigation equipment space operation environment is combined with an orbit determination combining dynamics and kinematics to provide a multi-navigation-system real-time orbit determination method, and broadcast ephemeris orbit errors adopta random walk strategy to perform parameterization separation; on the basis of the anti-error estimation principle, extended Kalman filter is used to estimate the optimal motion state of the low-earth-orbit satellite, and spatial information such as high-precision real-time positions and speed is provided for a satellite platform and load; the small navigation receiver is high in reliability, lightweight, especially applicable to small satellite environments and capable of satisfying the requirements of high-reliability, high-integrity and small-size satellite systems.

Description

technical field [0001] The invention relates to a miniaturized navigation receiver suitable for low-orbit satellites, belonging to the technical field of positioning and navigation. Background technique [0002] In recent years, the application of micro-satellites has developed vigorously, and the application of autonomous orbit determination for micro-satellites has also become a hot research direction in the field of navigation. Due to the advantages of low cost, fast response, and flexible payload application, microsatellites have entered a period of explosive growth at this stage. At present, a number of micro-satellite networking systems in the fields of communication, multimedia, mobile Internet, and surveying and mapping have entered the construction and demonstration stage. According to statistics, in the next five to ten years, hundreds of tiny satellites will realize in-orbit networking applications. Networked micro-satellite platforms and application payloads ha...

AI Technical Summary

Problems solved by technology

The multiple modular devices of traditional receivers can no longer meet the requirements in these aspects

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