Enhanced alerting of characteristic weather hazards

• US 8,395,541 B2
• Filed: 10/29/2008
• Issued: 03/12/2013
• Est. Priority Date: 10/29/2008
• Status: Active Grant

• Current Assignee: Honeywell International Inc.
• Original Assignee: Honeywell International Inc.
• Inventors: Khatwa, Ratan, Mathan, Santosh
• Primary Examiner(s): GREGORY, BERNARR E
• Application Number:
  US12/260,653
• Publication Number:
  US 20100103029A1
• Time in Patent Office: 1,595 Days
• Field of Search: 342 26 R- 26 D, 342/89, 342/90, 342/175, 342/176, 342179-182, 342190-197, 702 1- 4
• US Class Current: 342/26.B
• CPC Class Codes: G01S 13/953 mounted on aircraft
• CPC Class Codes: G01S 7/22 Producing cursor lines and indicia by electronic means
• CPC Class Codes: G01S 7/41 using analysis of echo signal for target characterisation; Target signature; Target cross-section
• CPC Class Codes: Y02A 90/10 Information and communication technologies [ICT] supporting adaptation to climate change, e.g. for weather forecasting or climate simulation

Abstract

A method of providing weather radar images to a flight crew of an aircraft includes obtaining raw volumetric radar data corresponding to at least one signal reflected off of a weather system. Based on the radar data, the weather system is computationally classified as being of a first type of a plurality of weather-system types. After classifying the weather system, the radar data is image processed, the image processing yielding an image representing the weather system and corresponding to the first weather-system type. The image is displayed on a display device.

Claims

1. A method of providing weather radar images to a flight crew of an aircraft, the method comprising:

at a processing device obtaining radar data from a radar system corresponding to at least one signal reflected off of a weather system;

based on the radar data, computationally classifying, using the processing device, the weather system as being of a first type of a plurality of weather-system types;

after classifying the weather system, image processing the radar data using the processing device, the image processing yielding an image representing the weather system and corresponding to the first weather-system type; and

displaying, using the processing device, the image on a display device.

2. The method of claim 1 wherein the radar data is stored in a three-dimensional buffer.

3. The method of claim 1, wherein classifying the weather system comprises the processing device employing signal processing techniques to perform one of correction or rejection of sets of the radar data contaminated by noise artifacts.

4. The method of claim 1, wherein the weather system has an associated set of quantifiable features;

and classifying the weather system comprises the processing device normalizing the features.

5. The method of claim 4, wherein classifying the weather system further comprises the processing device employing dimensionality reduction techniques to eliminate redundant ones of said quantifiable features.

6. The method of claim 1 wherein classifying the weather system comprises the processing device correlating the radar data with empirically determined patterns corresponding to respective weather-system types.

7. The method of claim 1 wherein the image is displayed in a manner visually distinguishable from other images displayed on the display device.

8. The method of claim 1 wherein the image comprises a three dimensional representation of the weather system.

9. The method of claim 1, further comprising the processing device displaying on the display device the spatial relationship between the weather system and an intended flight path of the aircraft.

10. An aircraft weather-radar system comprising:

a display; and

a processor coupled to the display, the processor configured to;

obtain radar data corresponding to at least one signal reflected off of a weather system;

based on the radar data, computationally classify the weather system as being of a first type of a plurality of weather-system types;

after classifying the weather system, image process the radar data, the image processing yielding an image representing the weather system and corresponding to the first weather-system type; and

display the image on a display device.

11. The system of claim 10, further comprising a three-dimensional buffer within which the radar data is stored.

12. The system of claim 10 wherein the processor is further configured to employ signal processing techniques to perform one of correction or rejection of sets of the radar data contaminated by noise artifacts.

13. The system of claim 10 wherein the weather system has an associated set of quantifiable features;

and

wherein the processor is further configured to normalize the features.

14. The system of claim 13 wherein the processor is further configured to employ dimensionality reduction techniques to eliminate redundant ones of said quantifiable features.

15. The system of claim 10 wherein the processor is further configured to correlate the radar data with empirically determined patterns corresponding to respective weather-system types.

16. The system of claim 10 wherein the image is displayed in a manner visually distinguishable from other images displayed on the display device.

17. The system of claim 10 wherein the image comprises a three dimensional representation of the weather system.

18. The system of claim 10 wherein the processor is further configured to display on the display device the spatial relationship between the weather system and an intended flight path of the aircraft.

19. The system of claim 18 wherein the processor is further configured to provide an alerting signal if the intended flight path of the aircraft passes through the weather system.

20. A non-transitory computer-readable medium including instructions that, when executed by a processor onboard an aircraft, enable the processor to perform steps comprising:

obtaining radar data corresponding to at least one signal reflected off of a weather system;

based on the radar data, computationally classifying the weather system as being of a first type of a plurality of weather-system types;

after classifying the weather system, image processing the radar data, the image processing yielding an image representing the weather system and corresponding to the first weather-system type; and

displaying the image on a display device.