Method for correcting the time delay in measuring agricultural yield
First Claim
1. A method of correcting a time lag for a set of data, comprising the steps of:
- generating a plurality of adjusted data sets by replacing geographic coordinates of a measuring point supplied by a geolocation system with geographic coordinates of a previous or a future measuring point having a time lag value to shift the geographic coordinates of the measuring point; and
for each set of adjusted data;
building a three-dimensional map showing latitudes, longitudes and heights along the X, Y and Z axes, respectively, in accordance with the adjusted data associated with the measuring point, wherein a height represents a sensor value;
determining a measurement of a developed surface area of the three-dimensional map;
calculating a surface area of a projection of the three-dimensional map onto a plane of latitudes and longitudes;
calculating a projection ratio between the developed surface area of the three-dimensional map and the area of projection;
determining a minimum value of the projection ratio for the sets of adjusted data; and
correcting the set of data using the minimum value.
1 Assignment
0 Petitions
Accused Products
Abstract
The invention relates to a method of processing a set of data collected by at least one sensor at successive points on the travel over a plot of land (1), by at least one vehicle (2), each one of the said pieces of data having been recorded with a time difference in relation to the moment of the vehicle passing over a given point on the plot, i.e. representing information relating to the state of the vehicle at a moment prior to its moment of recording, each piece of data being associated with a moment of recording and a geographical position of a point known as the measuring point at this moment of recording, supplied by geolocation means.
The method comprises a phase of estimating an optimum difference value by minimizing a degree of projection of a three-dimensional map of values measured at each geographical point, and correction of the data measured from this difference.
-
Citations
22 Claims
-
1. A method of correcting a time lag for a set of data, comprising the steps of:
-
generating a plurality of adjusted data sets by replacing geographic coordinates of a measuring point supplied by a geolocation system with geographic coordinates of a previous or a future measuring point having a time lag value to shift the geographic coordinates of the measuring point; and for each set of adjusted data; building a three-dimensional map showing latitudes, longitudes and heights along the X, Y and Z axes, respectively, in accordance with the adjusted data associated with the measuring point, wherein a height represents a sensor value; determining a measurement of a developed surface area of the three-dimensional map; calculating a surface area of a projection of the three-dimensional map onto a plane of latitudes and longitudes; calculating a projection ratio between the developed surface area of the three-dimensional map and the area of projection; determining a minimum value of the projection ratio for the sets of adjusted data; and correcting the set of data using the minimum value. - View Dependent Claims (2, 3, 4, 5, 6)
-
-
7. A method, comprising:
-
receiving a data set comprising a set of geographic coordinates defining a plurality of measuring points and sensor data collected at each of the measuring points by a vehicle moving over a plot of land, the measuring points and the sensor data being misaligned due to a time lag of unknown duration in the sensor data; generating an adjusted data set by correcting the data set based on an optimal value for the time lag, the optimal value for the time lag being one of a plurality of candidate time values and having been determined to minimize the sensor data misalignment as compared to other candidate time lag values of the plurality of candidate time values; and generating a yield map by distributing sensor data associated with each particular measuring point of the adjusted data set across an area associated with the particular measuring point and adding the distributed sensor data to a grid of cells that is applied over a representation of the plot of land. - View Dependent Claims (8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22)
-
Specification