SAR Stubble Burning Detection for Precise Emission Estimates
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Solution Overview
Problem
Existing methods for estimating greenhouse gas emissions from stubble burning are limited by cloud cover, low spatial resolution, and update frequency, making it difficult to accurately attribute emissions to burnt acreage.
Innovation Solution
Utilizing Synthetic Aperture Radar (SAR) interferometric signal superposition and back-scattering decomposition, combined with contextual data and machine learning models, to identify stubble burning areas and determine their environmental impact.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If remotely sensed optical images are used to estimate greenhouse gas emissions, then near-global coverage is achieved, but measurement precision deteriorates due to cloud cover and low spatial resolution
Solution Approach 1:
The patent introduces SAR interferometry as an intermediary technique between optical satellite imagery and ground-based measurements. The SAR system acts as a mediator that can penetrate cloud cover while providing high spatial resolution data, thus resolving the contradiction between global coverage and measurement precision by bridging the gap between coarse optical data and detailed ground observations
Solution Approach 2:
The patent changes the observational parameters from optical reflectance to microwave radar backscatter and interferometric phase. This parameter change allows the system to operate independently of cloud cover (unlike optical images) while maintaining high spatial resolution, thereby improving measurement precision without sacrificing coverage area
2Quantity of substance
If remotely sensed observations are used to determine greenhouse gas inventory, then current inventory estimation is achieved, but direct emissions measurement deteriorates due to partial column measurement
Solution Approach 1:
The patent segments the atmospheric column into multiple layers using interferometric SAR techniques. By analyzing phase differences at different altitudes, the system can isolate and measure emissions from specific height ranges, thereby transitioning from integrated partial column measurements to layered direct emissions measurements with improved precision
Solution Approach 2:
The patent adds the vertical dimension to emissions measurement by utilizing interferometric phase information that encodes altitude. This dimensional transformation allows the system to distinguish between emissions from different atmospheric layers, converting integrated column measurements into vertically-resolved direct emissions measurements
3Speed
If optical satellite data is used for stubble burning detection, then update frequency is limited, but spatial resolution deteriorates compared to the size of burning areas
Solution Approach 1:
The patent makes the SAR system multi-functional by designing it to simultaneously provide both high spatial resolution imaging and frequent temporal sampling. The same SAR instrument and processing methodology can detect small burning areas with high precision while maintaining rapid update rates, eliminating the trade-off between resolution and frequency that plagues optical systems
Data Source
AI summary
A method, computer system, and a computer program product for improving environmental impact estimations is provided. The present invention may include obtaining data pertaining to an agricultural area. The present invention may include deriving one or more features from the data pertaining to the agricultural area. The present invention may include identifying one or more stubble burning areas within the agricultural areas based on the one or more derived features. The present invention may include determining an environmental impact for each of the one or more stubble burning areas.