Design And Implementation Of Remote Sensing Resource And Service Trading Platform Based On Blockchain

With the rapid development of aerospace industry,remote sensing technology has been applied more and more widely.While remote sensing technology has been paid more and more attention and developed rapidly,the trading market of commercial remote sensing resources and services is not active,which limits the popularization of remote sensing application and the further coordinated development of industrial chain.There are two main reasons.On the one hand,there is a lack of trading platform for security interaction and mutual trust between suppliers of remote sensing resources and services and the increasing number of demanders.On the other hand,the traditional remote sensing resource and service transaction price negotiation mechanism is time-consuming and cumbersome,and the communication cost between the supply and demand sides is high.Aiming at the above problems,this paper designs an architecture of remote sensing resources and service transaction based on blockchain,IPFS and Mongo DB technologies.Combined with the second price sealed auction in economics,the auction transaction mechanism of remote sensing resources and services is designed.The transaction arbitration mechanism is designed based on multi-signature technology.On this basis,a prototype platform of remote sensing resource and service transaction based on block chain is realized.The main work of this paper is as follows:1)A remote sensing resource and service transaction architecture based on blockchain is proposed.This architecture solves the problem of mutual distrust between trading parties by making use of the characteristics of non-tampering and traceability of data on the blockchain.Using Mongo DB data retrieval and filtering to solve the problem of difficult filtering query on the block chain;Image or text storage in the block chain is very expensive or even not feasible,using the Inter Planetary File System(IPFS)to save public resources,to solve some users in order to better explain remote sensing resources and services that is,want to show remote sensing resources and services image and detailed text requirements.2)An informal auction transaction mechanism for remote sensing resources and services based on the second price sealed auction and intelligent contract is designed,which solves the problems of long negotiation time,complicated process and inflexible pricing.A transaction arbitration mechanism based on multi-signature and intelligent contract is designed to solve the problem of remote sensing resource and service transaction arbitration.3)A prototype platform of remote sensing resource and service transaction based on blockchain is realized.Based on the remote sensing resources and service trading framework designed in this paper,combined with auction trading mechanism and transaction arbitration mechanism,a prototype platform of remote sensing resources and service trading integrating trust and security was developed and realized by using IPFS,Mongo DB and other related development technologies.Remote sensing resources and services query and display functions,remote sensing resources and services auction functions,and transaction arbitration functions.Finally,the platform is tested.The test results show that the platform can meet the high concurrent requests in real scenarios and can run normally in peak request scenarios.