Return type aircraft trajectory measurement and communication device based on Beidou short message

Abstract

The invention relates to a return-type aircraft trajectory measurement and communication device based on Beidou short messages, and belongs to the technical field of satellite navigation communication. The device integrates an integrated antenna, a multi-antenna radio frequency processing unit, an RN / RD integrated unit and an analytic method orbit forecasting unit, and in order to meet the requirements of miniaturization, high dynamic and high rotation of a return-type aircraft, multiple paths of integrated antenna input signals are fused, so the number of rear-end hardware modules can be reduced, RNSS and RDSS signals in the returning process can be ensured to be continuously visible, and meanwhile, the space in a cabin of a returner is saved; the analytical orbit forecasting unit can determine forecasting data in a certain range by utilizing more measurement data under the condition that the position and the speed of a returner are known; an RNSS and RDSS integrated design scheme is adopted, RNSS positioning and forecasting data are sent to an RDSS module through an internal bus interface, and after Doppler compensation is carried out on the RDSS module, inbound information is sent to a ground recovery system through a Beidou short message system.

Description

technical field [0001] The invention relates to a returnable satellite trajectory measurement and prediction device integrating an integrated antenna, a multi-antenna radio frequency processing unit, an RN / RD integration unit and an analytical orbit prediction unit, belonging to the technical field of satellite navigation and communication. Background technique [0002] In 2010, after the "Hayabusa" probe completed the scheduled mission, it carried the return capsule and began to return to the earth. When the "Hayabusa" return capsule entered the earth's atmosphere, the space agency used the ground radar system to immediately track the return capsule and make an accurate assessment. It took pictures, and then the testers who took the helicopter to observe in the air followed and observed the pre-set falling trajectory of the return capsule. After the return capsule successfully landed on the expected shooting range, the positioning equipment carried inside confirmed the curr...

AI Technical Summary

Problems solved by technology

This single-antenna design can easily cause the antenna to be blocked by the device body or the installation carrier during the attitude change process, resulting in the interruption of RNSS and RDSS signals, the interruption of positioning and short message communication functions, and the inability to continuously provide services. , speed forecast function

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