Satellite-borne radar switching interface module

Abstract

The invention discloses a satellite-borne radar switching interface module, which is characterized in that an external power supply is connected with a 5V power supply interface chip through a VPX bus to supply power to the module, an anti-radiation device reads data self-configuration of a PROM, reads more than two parts of data of FLASH to configure an FPGA device, refreshes configuration of the FPGA device at regular time, monitors the state of the FPGA device and reads BIT information of the FPGA device. According to the FPGA device, the FPGA device is connected with a VPX bus through a CAN interface chip or an RS485 interface chip, external data is transmitted to the FPGA device through the VPX bus to be analyzed and recognized and transmitted to a next processing node, high-speed transmission of the data is achieved, and the triple modular redundancy and dynamic refreshing technology is adopted to reinforce radiation resistance, adapt to the space environment and reduce the influence of FPGA logic and FLASH overturning; and a data transmission link and a control instruction are adopted, software uploading is achieved, and ground software updates satellite-borne radar switching interface module software online.

Description

technical field [0001] The invention belongs to the technical field of radar signal processing, and in particular relates to a bus interface technology. Background technique [0002] In order to adapt to the complex space environment and meet the needs of on-orbit real-time processing, the spaceborne radar real-time processing system needs to have the characteristics of high reliability, high performance, and low power consumption, especially the hub of data transmission and exchange - the exchange interface module. Normal operation is an important guarantee for the normal operation of the spaceborne radar real-time processing system. [0003] At present, the switch interface module is mainly designed for airborne and ground radars. Its working environment is good, and it is easy to repair and replace if it fails. [0004] In the prior art, there is no exchange interface module designed for the on-orbit operation of the spaceborne radar real-time processing system to adapt ...

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Problems solved by technology

[0005] In order to solve the problems existing in the prior art, the present invention proposes a spaceborne radar exchange interface module, which is based on the VPX bus and adopts technologies such as triple-mode redundancy, dynamic refresh, and software annotation to solve the problem of space environment adaption of the exchange interface module, For problems such as software online update, dual redundant cold backup is adopted to improve the reliability of high-speed data transmission and exchange, and lay the foundation for the development of on-orbit real-time processing system for spaceborne radar. In order to achieve the above purpose, the present invention adopts the following technical solutions

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