METHOD AND SYSTEM FOR IMPROVING THE RESOLUTION OF SENSOR DATA
First Claim
1. A computer-implemented method of improving the spatial resolution of sensor data, preferably sensor data from a satellite or a drone, said sensor data preferably being suitable for determining soil moisture data from said sensor data, comprising at least one processor performing the steps of:
- receiving a sensor data set, each element of said sensor data set comprising a sensor footprint identifier allowing a sensor footprint to be identified and a brightness temperature measured for said sensor footprint;
receiving a map, said map defining for each of a plurality of geographical areas whether it belongs to one of said first class and said second class, said first class representing a land type, said second class representing a water type and said geographical area being smaller than said sensor footprint;
determining for each element of said sensor data set a brightness temperature for a first class of at least two classes and a brightness temperature for a second class of said at least two classes based on said map; and
determining a brightness temperature for a geographical area of said map based on brightness temperatures associated with a plurality of footprints if said geographical area belongs to said first class, each of said plurality of footprints covering said geographical area, and based on a brightness temperature determined for said second class if said geographical area belongs to said second class,wherein the step of determining for each element of said sensor data set said brightness temperature for said first class and said brightness temperature for said second class comprises;
determining a brightness temperature for said second class from a plurality of percentages, said plurality of percentages comprising for each of a plurality of elements of said sensor data set a percentage of at least one footprint associated with said element belonging to said first class and a percentage of said at least one footprint belonging to said second class, and from brightness temperatures associated with said plurality of elements, anddetermining for each element of said plurality of elements a brightness temperature for said first class based on said brightness temperature for said second class, said brightness temperature measured for said element, a percentage of at least one footprint associated with said element belonging to said first class and a percentage of said at least one footprint belonging to said second class.
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Accused Products
Abstract
The invention relates to a system (51) for improving the spatial resolution of sensor data. The system comprises at least one receiver (53) and at least one processor (55). The at least one receiver (53) is configured to receive a sensor data set and a map. Each element of the sensor data set comprises a sensor footprint identifier allowing a sensor footprint to be identified and a brightness temperature measured for the sensor footprint. The map defines for each of a plurality of geographical areas whether it belongs to one of the first class and the second class. The first class represents a land type and the second class represents a water type. The geographical area is smaller than the sensor footprint. The at least one processor (55) is configured to determine for each element of the sensor data set received using the at least one receiver (53) a brightness temperature for each of at least two classes including the first class and the second class based on the map received using the at least one receiver (53) and to determine a brightness temperature for a specific geographical area of the map based on brightness temperatures associated with a plurality of footprints if the specific geographical area belongs to the first class and based on a brightness temperature determined for the second class if the specific geographical area belongs to the second class. Each of the plurality of footprints covers the specific geographical area.
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Citations
12 Claims
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1. A computer-implemented method of improving the spatial resolution of sensor data, preferably sensor data from a satellite or a drone, said sensor data preferably being suitable for determining soil moisture data from said sensor data, comprising at least one processor performing the steps of:
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receiving a sensor data set, each element of said sensor data set comprising a sensor footprint identifier allowing a sensor footprint to be identified and a brightness temperature measured for said sensor footprint; receiving a map, said map defining for each of a plurality of geographical areas whether it belongs to one of said first class and said second class, said first class representing a land type, said second class representing a water type and said geographical area being smaller than said sensor footprint; determining for each element of said sensor data set a brightness temperature for a first class of at least two classes and a brightness temperature for a second class of said at least two classes based on said map; and determining a brightness temperature for a geographical area of said map based on brightness temperatures associated with a plurality of footprints if said geographical area belongs to said first class, each of said plurality of footprints covering said geographical area, and based on a brightness temperature determined for said second class if said geographical area belongs to said second class, wherein the step of determining for each element of said sensor data set said brightness temperature for said first class and said brightness temperature for said second class comprises; determining a brightness temperature for said second class from a plurality of percentages, said plurality of percentages comprising for each of a plurality of elements of said sensor data set a percentage of at least one footprint associated with said element belonging to said first class and a percentage of said at least one footprint belonging to said second class, and from brightness temperatures associated with said plurality of elements, and determining for each element of said plurality of elements a brightness temperature for said first class based on said brightness temperature for said second class, said brightness temperature measured for said element, a percentage of at least one footprint associated with said element belonging to said first class and a percentage of said at least one footprint belonging to said second class. - View Dependent Claims (5, 6, 10, 11)
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2. (canceled)
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4. (canceled)
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8. (canceled)
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9. (canceled)
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12. A system for improving the spatial resolution of sensor data, comprising:
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at least one receiver; and at least one processor configured; to use said at least one receiver to receive a sensor data set, each element of said sensor data set comprising a sensor footprint identifier allowing a sensor footprint to be identified and a brightness temperature measured for said sensor footprint, to use said at least one receiver to receive a map, said map defining for each of a plurality of geographical areas whether it belongs to one of said first class and said second class, said first class representing a land type, said second class representing a water type and said geographical area being smaller than said sensor footprint, to determine for said each element of said sensor data set a brightness temperature for each of at least two classes including said first class and said second class based on said map, and to determine a brightness temperature for a geographical area of said map based on brightness temperatures associated with a plurality of footprints if said geographical area belongs to said first class, each of said plurality of footprints covering said geographical area, and based on a brightness temperature determined for said second class if said geographical area belongs to said second class, wherein said at least one processor is configured to determine for said each element of said sensor data set said brightness temperature for each of said at least two classes by; determining a brightness temperature for said second class from a plurality of percentages, said plurality of percentages comprising for each of a plurality of elements of said sensor data set a percentage of at least one footprint associated with said element belonging to said first class and a percentage of said at least one footprint belonging to said second class, and from brightness temperatures associated with said plurality of elements, and determining for each element of said plurality of elements a brightness temperature for said first class based on said brightness temperature for said second class, said brightness temperature measured for said element, a percentage of at least one footprint associated with said element belonging to said first class and a percentage of said at least one footprint belonging to said second class.
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Specification