Mapping and analysis system for precision farming applications

• US 5,467,271 A
• Filed: 12/17/1993
• Issued: 11/14/1995
• Est. Priority Date: 12/17/1993
• Status: Expired due to Fees

• Current Assignee: Northrop Grumman Corporation
• Original Assignee: TRW Inc. (Northrop Grumman Corporation)
• Inventors: Abel, Robert J., MacDonald, Michael C., Wang, Peter S.
• Primary Examiner(s): McElheny, Jr., Donald E.
• Application Number:
  US08/169,853
• Time in Patent Office: 697 Days
• Field of Search: 364/420, 250/255, 395/928
• US Class Current: 702/5
• CPC Class Codes: A01B 79/005 Precision agriculture
• CPC Class Codes: Y02A 40/10 in agriculture

Abstract

A mapping and analysis system generates agricultural maps and analyzes the agricultural maps to match farm inputs of a farming field to current soil and vegetation characteristics to optimize the productivity of the farming field. The mapping and analysis system includes an air-based device for generating spectral image data related to at least one of vegetation stress and soil characteristics for a portion of the farming field. A position device generates position data related to the position of said air-based device with respect to said portion of the farming field. A georeferencing device synchronizes said position data with said spectral image data to generate georeferenced spectral image data. A database is generated using the georeferenced data to monitor and analyze the farming field for a growing season to improve productivity thereof.

Claims

1. A mapping and analysis system for generating agricultural maps and for analyzing said agricultural maps to match farm inputs of a farming field to current soil and vegetation characteristics to optimize the productivity of the farming field comprising:

air-based means for generating spectral image data related to at least one of vegetation stress and soil characteristics for a portion of the farming field;

position means for generating position data related to the position of said air-based means with respect to said portion of the farming field; and

georeferencing means for synchronizing said position data with said spectral image data to generate georeferenced spectral image data.

2. The mapping and analysis system of claim 1 wherein said air-based means further includes:

a spectrometer for generating said spectral image data over a plurality of frequency bands.

3. The mapping and analysis system of claim 2 wherein said air-based means further includes:

a camera for generating at least one of visual and thermal image data.

4. The mapping and analysis system of claim 3 wherein said georeferencing means includes:

footprint means for projecting boundary points of a field of view of at least one of said spectrometer and said camera onto the ground.

5. The mapping and analysis system of claim 4 wherein said boundary points are assigned earth coordinate points.

6. The mapping and analysis system of claim 4 wherein said footprint means re-projects said boundary points when said position means generates new position data, when said at least one of said spectrometer and said camera is moved, and when a user selects an image snapshot.

7. The mapping and analysis system of claim 4 wherein said georeferencing means further includes:

image rectification means for selecting an area within said projected boundary points and for determining and assigning said spectral image data relative earth coordinates.

8. The mapping and analysis system of claim 1 further comprising:

mosaicking means for overlaying said georeferenced spectral image data for said portion of said farming field with said georeferenced spectral image data generated by said mapping and analysis system for at least one adjacent portion of said farming field.

9. The mapping and analysis system of claim 3 wherein said air-based means further includes:

camera positioning means for positioning said high resolution camera.

10. The mapping and analysis system of claim 9 wherein said air-based means further includes:

elevation database means associated with said air-based means for storing elevation data for said farming field under study.

11. The mapping and analysis system of claim 10 wherein said elevation database means generates elevation data under control of and in synchronization with said position data generated by said position means.

12. The mapping and analysis system of claim 11 wherein said georeferencing means georeferences said spectral image data in real time using said position data and said elevation data.

13. The mapping and analysis system of claim 9 wherein said georeferencing means georeferences said spectral image data using pointing signals generated by said camera positioning means.

14. The mapping and analysis system of claim 1 further comprising:

display means for displaying said georeferenced spectral image data.

15. The mapping and analysis system of claim 1 further comprising:

annotation means for annotating said georeferenced spectral image data with text and graphics.

16. The mapping and analysis system of claim 1 further comprising:

first data link means for transmitting georeferenced spectral image data to a ground station.

17. The mapping and analysis system of claim 16 wherein said ground station includes:

second data link means for receiving said georeferenced spectral image data from said air-based means; and

storing means for storing said georeferenced spectral image data.

18. The mapping and analysis system of claim 17 wherein said ground station further includes:

a ground-based spectrometer for generating ground-based spectral image data.

19. The mapping and analysis system of claim 18 wherein said ground station further includes:

positioning means for positioning said ground-based spectrometer.

20. The mapping and analysis system of claim 1 further comprising:

database means for storing and associating said georeferenced spectral image data for a farming field with previously obtained georeferenced spectral image data for said farming field.

21. The mapping and analysis system of claim 20 wherein said database means stores said spectral image data according to geographical location, date and time.

22. The mapping and analysis system of claim 21 wherein said database means associates georeferenced spectral image data collected using said air-based means with ground-based spectral image data according to geographical location, date and time.

23. The mapping and analysis system of claim 22 wherein said database means stores, retrieves and associates ground-based soil and vegetation measurements according to geographical location, date and time.

24. The mapping and analysis system of claim 1 wherein said ground station further includes:

adaptive signal processing means for classifying collected georeferenced spectral image data into crop and soil status categories.

25. The mapping and analysis system of claim 1 further comprising:

map generating means for generating georeferenced digital maps illustrating crop and soil categories.

26. The mapping and analysis system of claim 1 further comprising:

electronic map generating means for generating georeferenced digital maps including crop and soil category data.

27. The mapping and analysis system of claim 26 wherein said georeferenced digital maps are output to at least one of precision farming equipment, a computer network, digital tape, and CD-ROM.

28. A method of generating agricultural maps to match farm inputs of a farming field to current soil and vegetation characteristics to optimize the productivity of the farming field, comprising the steps of:

generating spectral image data related to at least one of vegetation stress and soil characteristics for a portion of the farming field;

generating position data related to the position of said air-based means with respect to said portion of the farming field; and

generating georeferenced spectral image data by synchronizing said position data with said spectral image data.

29. The method of claim 28 wherein said spectral image data is generated by at least one of a spectrometer and a camera.

30. The method of claim 29 further including the step of:

projecting boundary points of a field of view of at least one of said spectrometer and said camera onto the ground.

31. The method of claim 30 further comprising the step of:

assigning earth coordinate points to said boundary points.

32. The method of claim 30 further including the step of:

re-projecting said boundary points when said position means generates new position data, when said at least one of said spectrometer and said camera is moved, or when a user selects an image snapshot.

33. The method of claim 30 further including the steps of:

selecting an area within said projected boundary points; and

assigning said spectral image data relative earth coordinates.

34. The method of claim 33 further including the step of:

overlaying said georeferenced spectral image data for said portion of said farming field with georeferenced spectral image data generated by said mapping and analysis system for at least one adjacent portion of said farming field.

35. The method of claim 28 further including the step of:

generating elevation data of said farming field from a database under control of and in synchronization with said position data.

36. The method of claim 28 further including the step of:

storing and associating said georeferenced spectral image data for a farming field with previously obtained georeferenced spectral image data for said farming field.

37. The method of claim 28 further comprising the step of:

associating georeferenced spectral image data collected using said air-based means with ground-based spectral image data according to geographical location and date.

38. A ground-based mapping and analysis system for analyzing air-based georeferenced spectral image data and for matching farm inputs of a farming field to current soil and vegetation characteristics to optimize the productivity of the farming field based upon said air-based georeferenced spectral image data, comprising:

storing means for storing first and second sets of georeferenced spectral image data;

database means, connected to said storing means, for associating said first and second sets of georeferenced spectral image data according to geographical location and date; and

processing means for estimating optimal farm inputs from said first and second sets of georeferenced spectral image data.

39. The ground-based mapping and analysis system of claim 38 wherein said processing means generates crop and soil status data from said first and second sets of georeferenced spectral image data.

40. The ground-based mapping and analysis system of claim 39 further comprising:

map generating means for generating georeferenced digital maps from said crop and soil category data,

wherein said georeferenced digital maps are output to at least one of precision farming equipment, a computer network, digital tape, and CD-ROM.

41. The ground-based mapping and analysis system of claim 38 further comprising:

ground-based means, coupled to said storing means and said database means, for collecting spectral image data.

42. The ground-based mapping and analysis system of claim 41 wherein said ground-based means includes:

a ground-based spectrometer; and

positioning means, coupled to said ground-based spectrometer, for positioning said ground-based spectrometer and for generating position signals.

47. The ground-based mapping and analysis system of claim 41 further including the step of:

collecting said ground-based spectral image data using a ground-based spectrometer and a positioning means, coupled to said ground-based spectrometer, for positioning said ground-based spectrometer; and

generating positioning signals based upon the position of said ground-based spectrometer.

43. A method for analyzing air-based georeferenced spectral image data and for matching farm inputs of a farming field to current soil and vegetation characteristics to optimize the productivity of the farming field based upon said air-based georeferenced spectral image data, comprising the steps of:

storing first and second sets of georeferenced spectral image data;

associating said first and second sets of georeferenced spectral image data according to geographical location and date; and

estimating optimal farm inputs from said first and second sets of georeferenced spectral image data.

44. The method of claim 43 further including the step of:

generating crop and soil status data from said first and second sets of georeferenced spectral image data.

45. The method of claim 44 further including the steps of:

generating georeferenced digital maps from said crop and soil category data; and

outputting said georeferenced digital maps to at least one of precision farming equipment, a computer network, digital tape, and CD-ROM.

46. The ground-based mapping and analysis system of claim 43 further including the step of:

collecting ground-based spectral image data; and

associating said ground-based spectral image data with said air-based georeferenced spectral image data.