2 results about "Cdma networks" patented technology

The invention provides an unmanned aerial vehicle dual-mode measurement and control system and method based on a high-throughput satellite, and relates to the technical field of unmanned aerial vehicle communication, and the system comprises an unmanned aerial vehicle platform, the high-throughput satellite, a ground gateway station of the high-throughput satellite, and a ground control station of the unmanned aerial vehicle platform. According to the system, a high-throughput satellite is adopted to solve the bandwidth requirement problem when a large number of unmanned aerial vehicles communicate at the same time, a ground gateway station of the high-throughput satellite is configured with a TDMA service carrier, a TDMA network control carrier, a CDMA service carrier and a CDMA network control carrier, forward remote control instructions are sent through a CDMA service channel in the system, and the bandwidth requirement of the unmanned aerial vehicles is met. According to the technical scheme of the invention, the TDMA service channel is used for returning the reverse measurement and control data, namely, a CDMA / TDMA dual-mode measurement and control method is adopted, so that the anti-interference performance of a high-throughput satellite forward link is improved, the technical problem that the communication of the unmanned aerial vehicle is easy to interrupt is avoided, and the reliability of the satellite communication system of the unmanned aerial vehicle is improved.

The application provides a high-throughput satellite-based unmanned aerial vehicle dual-mode measurement and control system and method, relates to the technical field of unmanned aerial vehicle communication, and comprises an unmanned aerial vehicle platform, a high-throughput satellite, a ground gateway station of the high-throughput satellite and a ground control station of the unmanned aerial vehicle platform; the system solves the bandwidth demand problem of a large number of unmanned aerial vehicles when simultaneously communicating by adopting the high-throughput satellite, the ground gateway station of the high-throughput satellite is provided with a TDMA service carrier, a TDMA network control carrier, a CDMA service carrier and a CDMA network control carrier, the system sends forward remote control instructions through a CDMA service channel and returns back measurement and control data through a TDMA service channel, that is, a CDMA / TDMA dual-mode measurement and control method is adopted, so that the anti-interference performance of the forward link of the high-throughput satellite is improved, the technical problem that unmanned aerial vehicle communication is prone to interruption is avoided, and the reliability of the unmanned aerial vehicle satellite communication system is improved.