Frequency translating transponder based on technical surveillance technology in air-based relay communication enhancement system

Abstract

The invention belongs to the technical field of wireless communication, and in particular relates to a frequency translating transponder based on a technical surveillance technology in an air-based relay communication enhancement system. The invention aims at building the air-based relay communication enhancement system by using thoughts of technical surveillance and frequency conversion. The frequency translating transponder is characterized by comprising an air signal forwarding sub-system and a ground signal forwarding sub-system, wherein the frequency translating transponder in the air signal forwarding sub-system is positioned in the relay load of an unmanned aerial vehicle, an uplink signal is quickly searched and received via an antenna, then a monitored VHF signal is up-converted into a signal in an L frequency band, and the signal is downlink forwarded via the antenna after amplification; and the frequency translating transponder in the ground signal forwarding sub-system is used for receiving the downlink signal forwarded in the air, and the downlink signal is down-converted into the signal in the original band via the frequency translating transponder, and output to theantenna after frequency-selecting treatment for forwarding, so as to be used by adjacent ultrashort wave communication equipment.

Description

technical field [0001] The invention belongs to the technical field of wireless communication, and in particular relates to a frequency conversion transponder based on technical detection technology in a space-based relay communication enhancement system. Background technique [0002] 1.1 Application background [0003] With the continuous popularization of mobile communication technology in China, due to the establishment of land mobile base stations, the full coverage of mobile signals has basically been realized in densely populated areas such as cities and towns. However, in recent years, emergencies have occurred frequently, and the emergence of severe natural disasters has caused huge damage to social stability and people's lives. In many disasters, communication systems and networks based on fixed infrastructure and power supply systems have been severely damaged. , or even completely paralyzed, during the prime time of emergency relief, it is difficult to establish ...

AI Technical Summary

Problems solved by technology

As far as practical application is concerned, the above UAV relay method has certain limitations:

This premise greatly limits the extended application of the relay load. Once the load is applied, it is difficult to apply to other frequency bands or communication systems that follow other information protocols. The communication system has a large limit on the load.

[0010] (3) Limitation of coverage; limited by the flying height of the UAV, the load antenna opening angle is small, the radio wave propagation path is blocked, the signal attenuation is large, and the coverage of the relay load on the ground is limited, which cannot guarantee the required area. Communication

[0011] (4) Limitation of user scale; limited by factors such as power and terrain, the relay load supports a small scale of network users

Since the lift-off platform especially needs to consider factors such as load and power, the volume of the relay load antenna and the signal transmission power cannot be designed too large, so the continuation time of the lift-off platform’s communication is limited, and it cannot support a large number of networked communication terminals. The relay payload supports weaker concurrent user communications

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