Collection And Processing Of Satellite Remote Sensing Data

With the rapid development of China’s economy and society, the majority of userdemand for satellite remote sensing data is very urgent at present, satellite remotesensing data for global natural disaster monitoring, environment and climate changeobservations and other investigations comprehensive study has important significance.Often in various fields downloading problems are: the amount of data, documents andmore real-time high of some remote sensing satellite data; If manual processing, cannot be downloaded to the valid data, and would be a waste of human resources; existsto resolve problems there are: HDF4files require specific software to open, and theamount of data, the error rate of artificial resolution.Automated data collection and processing can solve the above problem,download the subsystem can solve the problem of massive download and solve theproblem of artificial parsing, save manpower, rational use of resources, improve workefficiency. Gradually reflect the social effects.In the design process, system, divided into the following subsystems: taskmanagement subsystem, the subsystem task scheduling, task monitoring subsystem,the subsystem task to achieve, HDF4data analysis subsystem, HDF4data storagesubsystem.Task management: one-time configuration tasks, without repeating theconfiguration, save manpower; Task Scheduler: Task regular polling has beenconfigured, when tasks need to download detected automatically start downloading,without manual handling, to ensure timely and effective download; tasks can haveintuitive monitoring mission to show download status, and restart failed downloadtasks performed HTTP, to avoid wasting resources; task to achieve: Package FTPprotocol to download a specific task to complete; HDF4data analysis: the timely remote sensing for download data processing, business critical information needed toextract, in close contact with the data download, save manual processing time; HDF4data storage: The key information will be parsed and saved to the database library,provide the basis for post-processing and document retrieval document.