Method and apparatus for an autonomous cloud radar

• US 6,098,018 A
• Filed: 05/08/1998
• Issued: 08/01/2000
• Est. Priority Date: 05/08/1998
• Status: Expired due to Fees

• Current Assignee: University Technology Corporation
• Original Assignee: The United States of America As Represented By The Secretary of Agriculture
• Inventors: Moran, Kenneth, Zhang, Lingling, Welsh, David C., Glaess, Thomas, King, Sandy L., Merritt, David A., Francavilla, Anthony J.
• Primary Examiner(s): McElheny, Jr., Donald E.
• Application Number:
  US09/074,663
• Time in Patent Office: 816 Days
• Field of Search: 702/3, 702/4, 342/26, 342/460, 340/601, 340/602, 395/500.27
• US Class Current: 702/3
• CPC Class Codes: G01S 13/95 for meteorological use
• CPC Class Codes: G01S 7/003 Transmission of data between radar, sonar or lidar systems and remote stations
• 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 cloud radar apparatus is mounted on a portable containerized unit, a number of which may be located at various positions throughout the planet. Cloud radar data from each unit are periodically measured and stored and made available to researchers, upon request, through the Internet or other network. The system comprises two computers operating on different operating systems. A first computer uses a first operating system which allows it to readily interface with various radar equipment using an IEEE 488 interface or the like, to monitor the health of the equipment and operate the equipment. A second computer system uses a second operating system in a multi-user mode which allows it to readily access and manipulate data files and transfer data over the network. Communication between the two computers is achieved by allowing the first computer to log into the second computer as one of the multiple users. The first computer may upload data to the second computer using a FTP protocol or the like. A second user in the second computer may generate cloud radar images and apply calibration data to received data to produce calibrated data. A third user may be logged onto the second computer to handle data transfers to and from the network. By using two computers with operating systems selected for optimum performance with their respective tasks, the system of the present invention allows for completely autonomous operation of a remote radar site with automated collection and distribution of cloud radar data.

Claims

1. An apparatus for autonomously generating atmospheric radar data comprising:

a portable container for housing the apparatus;

a radar apparatus, housed on the portable container for generating radar signals and receiving return radar signals reflected from the atmosphere as reflected radar signals;

a radar processor, housed in the portable container, coupled to the radar apparatus, for controlling and monitoring the radar apparatus and for receiving the reflected radar signals as radar data; and

a data management processor, housed in the portable containter, coupled to the radar processor, for receiving the radar data, processing the radar data into radar image data, storing the radar image data,

wherein said data management processor further comprises;

a multi-user computer system having a plurality of users logged thereto,

wherein a first user comprises the radar processor logged into the data management processor for transferring radar data from the radar processor to the data management processor as file transfers, and

wherein a second user comprises a data processing program for processing radar data received as file transfers and outputting processed radar data.

2. The apparatus of claim 1, wherein said data management processor is coupled to at least one data network for distributing the radar image data over the at least one data network.

3. The apparatus of claim 2, wherein said radar processor periodically controls the radar apparatus to cause the radar apparatus to generate radar signals and receive the radar signals reflected from the atmosphere as reflected radar signals, said radar processor receiving the reflected radar signals and storing the reflected radar signals as radar data, said radar processor further comprising:

means for periodically transferring radar data to said data management processor and for erasing stored radar data from the radar processor after transfer.

4. The apparatus of claim 3, wherein said radar processor further comprises:

means for controlling the radar apparatus to generate a calibration signal over the radar apparatus;

means for receiving at least one signal from the radar apparatus representative of the calibration signal passing through at least a portion of the radar apparatus; and

means for storing the at least one signal as a calibration value.

5. The apparatus of claim 3, wherein said data management processor further comprises:

a circular buffer for storing radar data received from the radar processor and allowing transfer of stored radar data to the at least one network.

6. An apparatus for autonomously generating atmospheric radar data comprising:

a portable container for housing the apparatus;

a radar apparatus, housed on the portable container for generating radar signals and receiving return radar signals reflected from the atmosphere as reflected radar signals;

a radar processor, housed in the portable container, coupled to the radar apparatus, for controlling and monitoring the radar apparatus and for receiving the reflected radar signals as radar data; and

a data management processor, housed in the portable containter, coupled to the radar processor, for receiving the radar data, processing the radar data into radar image data, storing the radar image data,

wherein said data management processor further comprises;

a multi-user computer system having a plurality of users logged thereto,

wherein a first user comprises the radar processor logged into the data management processor for transferring radar data from the radar processor to the data management processor as file transfers,

wherein a second user comprises a data processing program for processing radar data received as file transfers and outputting processed radar data, and

wherein a third user comprises a site data system, logged into the data management processor, for transferring processed data received from the data management processor to a remote computer system over at least one network.

7. The apparatus of claim 6, wherein said data processing program comprises a program for converting radar data binary moment and spectra files transmitted from the radar processor into network Common Data Format files, and for outputting the network Common Data Format files to the at least one network.

8. The apparatus of claim 7, wherein said radar data processing program first creates a lock file in the data management processor, and said first and third users suspend operation upon detection of the lock file in the data management processor.

9. The apparatus of claim 6, wherein said radar apparatus comprises:

a traveling wave tube amplifier, coupled to receive an input signal from the radar processor, for generating at least one radar pulse; and

an antenna, coupled to the traveling wave tube amplifier, for outputting the radar pulse as a radar signal and for receiving a return radar signal reflected from the atmosphere as a reflected radar signal.

10. The apparatus of claim 9, wherein said radar apparatus further comprises:

an intermediate frequency modulator, coupled to the radar processor, for receiving a first pulse control signal from the radar processor and generating an intermediate frequency pulse;

a radio frequency converter, coupled to the intermediate frequency modulator and the antenna, for converting the intermediate frequency pulse to a radio frequency pulse and outputting the radio frequency pulse to the antenna.

11. The apparatus of claim 10, wherein said radar apparatus further comprises:

a transmit-receive switch, coupled to said antenna, for receiving the reflected radar signal from the antenna and passing the reflected radar signal from the antenna to the radio frequency converter,

wherein the radio frequency converter converts the reflected radar signal to an intermediate frequency reflected radar signal, the intermediate frequency modulator converts the intermediate frequency reflected radar signal to radar data.

12. A method for autonomously generating atmospheric radar data comprising:

generating, in a radar apparatus, radar signals

receiving, in the radar apparatus, return radar signals reflected from the atmosphere as reflected radar signals,

controlling, using a radar processor, coupled to the radar apparatus, the radar apparatus,

receiving, using the radar processor, the reflected radar signals as radar data,

receiving, using a data management processor coupled to the radar processor and to at least one data network, the radar data,

processing, using the data management processor, the radar data into radar image data,

storing, using the data management processor, the radar image data, and

distributing, from the data management processor, the radar image data over the at least one data network,

wherein said processing step further comprises the steps of;

logging a first user into the data management processor, the first user comprising the radar processor for transferring radar data from the radar processor to the data management processor as file transfers, and

logging a second user into the data management processor, the second user comprising a data processing program for processing radar data received as file transfers and outputting Processed radar data.

13. The method of claim 12, wherein said controlling step further comprises the steps of:

periodically controlling, using the radar processor, the radar apparatus to cause the radar apparatus to generate radar signals,

receiving, from the radar apparatus, in the radar processor, radar signals reflected from the atmosphere as reflected radar signals,

storing in the radar processor the reflected radar signals,

periodically transferring radar data to the data management processor from the fist computer system, and

erasing stored radar data from the radar processor after transfer.

14. The method of claim 13, wherein said controlling step further comprises the steps of:

controlling the radar apparatus to generate a calibration signal over the radar apparatus;

receiving at least one signal from the radar apparatus representative of the calibration signal passing through at least a portion of the radar apparatus; and

storing the at least one signal as a calibration value.

15. A method for autonomously generating atmospheric radar data comprising:

generating, in a radar apparatus, radar signals

receiving, in the radar apparatus, return radar signals reflected from the atmosphere as reflected radar signals,

controlling, using a radar processor, coupled to the radar apparatus, the radar apparatus,

receiving, using the radar processor, the reflected radar signals as radar data,

receiving, using a data management processor coupled to the radar processor and to at least one data network, the radar data,

processing, using the data management processor, the radar data into radar image data,

storing, using the data management processor, the radar image data, and

distributing, from the data management processor, the radar image data over the at least one data network,

wherein said processing step further comprises the steps of;

logging a plurality of users into the data management processor, comprising the steps of

logging a first user into the data management processor, the first user comprising the radar processor for transferring radar data from the radar processor to the data management processor as file transfers,

logging a second user into the data management processor, the second user comprising a data processing program for processing radar data received as file transfers and outputting processed radar data to a circular buffer, and

logging a third user into the data management processor, the third user comprising a site data system, for transferring processed data from the circular buffer to a remote computer system over the at least one network.

16. The method of claim 15, wherein said processing step further comprises the steps of:

converting radar data binary moment and spectra files transmitted from the radar processor into network Common Data Format files, and

outputting network Common Data Format files to the at least one network.

17. The method of claim 16, wherein said processing step further comprises the steps of:

creating a lock file in the data management processor,

said first and third users suspending operation upon detection of the lock file in the data management processor.

18. The method of claim 15, wherein said generating step further comprises the steps of:

generating, in a traveling wave tube amplifier, in response to a received input signal from the radar processor, at least one radar pulse, and

outputting, from an antenna coupled to the traveling wave tube amplifier, the radar pulse as a radar signal;

wherein said receiving step further comprises the steps of;

receiving, with the antenna, a return radar signal reflected from the atmosphere as a reflected radar signal.

19. The method of claim 18, wherein said generating step further comprises the steps of:

receiving, in an intermediate frequency modulator coupled to the radar processor, a first pulse control signal from the first computer,

generating, from the intermediate frequency modulator, an intermediate frequency pulse,

converting, in a radio frequency converter coupled to the intermediate frequency modulator and the antenna, the intermediate frequency pulse to a radio frequency pulse, and

outputting the radio frequency pulse to the antenna.

20. The method of claim 18, wherein said receiving step further comprises the steps of:

receiving, in a transmit receive switch coupled to the antenna, the reflected radar signal from the antenna,

passing, from the transmit receive switch, the reflected radar signal from the antenna to the radio frequency converter,

converting, in the radio frequency converter, the reflected radar signal to an intermediate frequency reflected radar signal, and

converting, in the intermediate frequency modulator, the intermediate frequency reflected radar signal to radar data.