A dual-redundancy airborne radar communication method and device with isolation

Abstract

The invention discloses an isolated double-redundancy airborne radar communication method and device. According to the method, a double-path CAN bus and an airborne system realize system communication, and external / internal redundancy can be selected autonomously according to the bus topology condition of an aerial carrier. If the aerial carrier with a double-path bus can be interconnected with the device pairwise, the aerial carrier realizes redundancy control of the external bus, and a redundancy control strategy is controlled by the aerial carrier end; and an aerial carrier with a single-path bus is connected to the external bus via double nodes, internal redundancy of the device is realized, and the redundancy control strategy is controlled by the internal of the device. The device takes an field programmable gate array (FPGA) as the core, the FPGA realizes conversion of bus protocols and selection of redundancy information, and data is sent to a digital signal processor DSP for calculating and processing. At the same time, the devices communicates with the internal of the airborne radar via parallel or serial ports, redundancy is isolated, and the information transmission reliability is ensured.

Description

technical field [0001] The invention relates to the technical field of embedded communication, in particular to a dual-redundancy airborne radar communication device with isolation. Background technique [0002] Airborne radar generally refers to the radar equipment mounted on manned aircraft or unmanned aerial vehicles. It is generally used as the payload of the carrier aircraft to receive control information from the carrier aircraft as well as the attitude and navigation information of the carrier aircraft itself. Due to its special working environment and task requirements, the requirements for the transmission rate and reliability of the airborne radar communication system are increasing day by day. [0003] At present, the commonly used communication methods between airborne radar and aircraft are mainly RS422 / RS485 bus, 1553B bus, CAN bus and other methods. Among them, the RS422 / RS485 bus is the earliest bus form used, which has a good ability to resist common mode i...

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is: the above-mentioned airborne radar and the communication mode of the carrier have a simple bus structure, weak anti-interference ability, low transmission efficiency, high cost and high power consumption, and the bus itself does not support redundancy. The connection signal is not isolated, the reliability is poor, etc.

Images