Synthesis aperture heat antenna feeder system suitable for large posture changes

Abstract

The invention discloses a synthesis aperture heat antenna feeder system suitable for large posture changes. The synthesis aperture heat antenna feeder system is composed of two synthesis aperture heat antenna feeder antennas and an antenna controller. The synthesis aperture heat antenna feeder antennas are installed on an air vehicle in a vertically-opposite mode. The multi-band frequency conformal cold-heat-integrated phased array design mode is adopted for the synthesis aperture heat antenna feeder antennas, multi-band frequency antennas are embedded into phased-array array faces in a layered mode, and transmitting and receiving of Ka / Ku frequency band signals, S / C frequency band signals and L frequency band signals can be completed through the single synthesis aperture heat antenna feeder antenna. The phased-array array faces and antenna heat protection covers of the synthesis aperture heat antenna feeder antennas are integrally designed in a synthesis mode, and the amplitudes and the phase positions of the antennas can be corrected by adjusting phased-array antenna parameters. The antenna controller obtains the angle and the distance between the air vehicle and an object according to position information and posture information of the air vehicle, and the number of working transmitting array elements and the number of working receiving array elements of the synthesis aperture heat antenna feeder antennas are dynamically adjusted; meanwhile, the synthesis aperture heat antenna feeder antennas suitable for communication are selected according to the angle information, and beam control is completed.

Description

technical field [0001] The invention relates to a synthetic aperture thermal antenna feed system adaptable to large attitude changes, and belongs to the technical field of space smart antenna communication. Background technique [0002] With the rapid development of aerospace technology, the requirements for the coverage area and signal quality of the aircraft measurement and control communication system are getting higher and higher. In recent years, the demand for low-cost, miniaturized, recyclable and returnable aircraft platforms has become increasingly urgent, and higher technical requirements have been put forward for the miniaturization, conformal, integrated, and intelligent design of the antenna system. [0003] Therefore, compared with the traditional aircraft, the intelligent antenna feed system not only needs to solve the problem of high code rate satellite-ground and inter-satellite communication in multiple frequency bands, but also needs to solve the alignment...

AI Technical Summary

Problems solved by technology

[0010] However, the above two schemes for improving the communication code rate and beam coverage have limitations.

For an antenna with a servo mechanism, the servo mechanism required for antenna rotation is relatively large, which requires strict attitude control stability of the aircraft platform, and the antenna needs to be put into the cabin when the aircraft returns, occupying the space of the payload, which is not possible for small aircraft. Using this antenna feeder design form

[0011] For general phased array antennas, the transmission frequency band is relatively single, and multiple antennas are also required to achieve multi-band transmission, and the system weight and power consumption are relatively large.

The beam coverage is limited, once the beam range is exceeded, the communication link cannot be established

For some specific aircraft, according to the working characteristics of the load, the aircraft will maintain an attitude roll of more than 180° for a long time when the load is working. At the same time, the real-time requirements for measurement and control communication are very high. The antenna feed design used by general satellites cannot meet the requirements.

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