Telemetering data access method for ground station of unmanned airship system

Abstract

The invention relates to a telemetering data access method for a ground station of an unmanned airship system, which comprises the following steps: saving the telemetering data of the unmanned airship system as an internal memory mapping data base comprising a plurality of data files, simultaneously establishing a corresponding external memory data base, and establishing worksheets corresponding to the data files of the internal memory mapping data base one to one in the external memory data base; then setting a historical variable and a current variable for each data file in the internal memory mapping data base, wherein the historical variables are used for marking recording positions in the external memory data base, and the current variables are used for marking the current recording position in the internal memory mapping data base; and finally, saving updated data to the internal memory mapping data base and saving the data files from the historical variables to the current variables in the internal memory mapping data base to the external memory data base at regular time to replace the complex and expensive internal memory mapping data base, realize the real-time monitoringon the unmanned airship and meet the demands on telemetering data access in the aspects of real-time performance, reliability and usability.

Description

technical field [0001] The present invention relates to a method in the technical field of remote sensing, in particular to a method for accessing telemetry data for ground stations of unmanned airship systems based on memory mapping. Background technique [0002] The ground station of the unmanned airship system interprets the received telemetry frames into telemetry data through a wireless link. The design of the access method of telemetry data has two major requirements: one is to facilitate the recording and analysis of experimental data, and the reproduction of the flight process; the other is to meet the online monitoring system status, so there are high requirements for real-time and reliability. [0003] After searching the prior art, it is found that there are currently two technical solutions. One is to implement it directly with a relational database. Although traditional relational databases are powerful in data management, they have poor performance in terms of...

AI Technical Summary

Problems solved by technology

At present, the development of in-memory database is relatively mature, and there are various methods in terms of architecture, data organization, access methods, concurrency control, fault recovery, etc., but there are generally difficulties such as complex deployment operations and high costs

Images