Satellite Image Selection for Ground Data Analysis
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Solution Overview
Problem
There is no guarantee that the timing of observation data acquisition coincides with the timing of satellite image capture, as satellites with one-day prograde orbits can only image a specific sky position once a day, while ground data acquisition is limited to several times a day, making it challenging to synchronize and analyze these data sets effectively.
Innovation Solution
A data analysis apparatus and method that acquires ground data at a predetermined location and time, and synchronizes it with a corresponding satellite image, using the acquired ground data and satellite image for analysis, ensuring accurate and timely data correlation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If satellite image capture timing is fixed by orbit (once per day for same position), then satellite imaging reliability is improved, but timing coincidence with ground data acquisition deteriorates
Solution Approach 1:
The system performs preliminary selection of satellite images that match the temporal and spatial conditions of ground data acquisition. By pre-filtering satellite images based on acquisition time proximity and location correspondence, the system ensures that only suitable satellite images are selected for analysis, resolving the timing mismatch between satellite passes and ground observations
Solution Approach 2:
The system changes the selection criteria parameters by introducing time proximity thresholds and location matching parameters. Instead of requiring exact timing coincidence, the system accepts satellite images within a predetermined time range of ground data acquisition, and matches images based on location correspondence, thereby resolving the contradiction between fixed satellite orbits and variable ground data acquisition timing
2Productivity
If ground data acquisition frequency is increased (several times per day), then data analysis frequency is improved, but synchronization with satellite image timing deteriorates
Solution Approach 1:
The system introduces an intermediary selection process that acts as a mediator between ground data and satellite images. This intermediary unit evaluates both ground data acquisition timing and satellite image capture timing, selecting combinations that satisfy both high analysis frequency requirements and synchronization constraints through predetermined selection criteria
Solution Approach 2:
The system applies partial action by selecting only those satellite images that partially satisfy the timing requirements rather than requiring complete synchronization. By accepting satellite images that are approximately contemporaneous with ground data acquisition rather than exactly simultaneous, the system maintains high data analysis frequency while achieving sufficient synchronization for effective analysis
3Ease of operation
If satellite image selection is made without specific criteria, then data acquisition simplicity is improved, but analysis accuracy deteriorates
Solution Approach 1:
The system performs preliminary selection of satellite images based on predetermined criteria including acquisition time proximity and location correspondence. This pre-filtering process automatically identifies suitable satellite images without requiring complex manual selection, thereby maintaining operational simplicity while ensuring analysis accuracy through criterion-based selection
Solution Approach 2:
The system changes the selection approach by introducing specific parameters such as time proximity thresholds and location matching criteria. These parameter-based selection rules provide automated, objective criteria for choosing satellite images, improving analysis accuracy while maintaining ease of operation through rule-based automated selection rather than manual intervention
Data Source
AI summary
There is provided a data analysis apparatus capable of selecting a satellite image suitable for analysis of observation data, a method, and a program. The data analysis apparatus includes: a data acquisition unit configured to acquire ground data at a predetermined place and at a predetermined time, and acquire a satellite image corresponding to the acquired ground data; and an analysis processing unit configured to analyze the ground data by using the acquired ground data and the acquired satellite image. The present technology can be applied to, for example, a satellite image processing system that uses the satellite image.