Method and system for parsing satellite image compressed data block based on aos frame

Abstract

The invention discloses a method and system for analyzing compressed data blocks of satellite images based on AOS frames. The method includes: acquiring compressed data blocks of satellite images to be analyzed, and encapsulating the compressed data blocks of satellite images into general decompressed image blocks ;Analyze the BPDU header parameters to determine whether the data is fully valid, fully filled, or partially valid; in which, in the fully valid state, the BPDU data is parsed and put into the write and send auxiliary processing function of the channel; in the fully filled state, Return to step 1 to reprocess the data; in the partially valid state, read the data length of the valid data of the preamble part to analyze and put it into the write and send auxiliary processing function of the channel. The invention can determine the position of the image block data in the image frame, and restore the complete image formed by the on-board sensor accordingly, so that the analysis of the data block can be more accurate and efficient.

Description

technical field [0001] The invention belongs to the technical field of data communication transmission, and relates to the field of satellite image compression data block analysis, in particular to a satellite image compression data block analysis method and system based on AOS frames. Background technique [0002] On the basis of the successful development of the conventional on-orbit system (COS) system and standard for low and medium data rate spacecraft by the Advisory Committee on Space Data Systems (CCSDS) composed of space organizations of various countries, it has been further developed to meet the needs of complex aerospace Advanced On-Orbit System (AOS) regimes and standards targeting device requirements. It is a system serving air-to-air, air-to-ground measurement and control communication and data management. It can process large-capacity, high-speed data and meet simultaneous access by a large number of users with different needs. It supports high-speed and low...

AI Technical Summary

Problems solved by technology

In the current satellite image compressed data block analysis methods, each can only analyze one or several specific AOS data frame formats, which does not have strong compatibility; in addition, in the existing methods, parallel analysis and efficiency issues There is still some room for improvement. Although some methods achieve high-efficiency analysis, the safety and reliability in the actual application process are difficult to meet the requirements.

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