Systems and applications of lighter-than-air (LTA) platforms
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
B64B-001/40
G01S-005/06
B64B-001/44
B64B-001/64
B64B-001/70
H04B-007/185
B64C-019/00
B64B-001/62
G05D-001/04
G01S-005/12
G01S-019/42
H04W-004/02
출원번호
US-0473691
(2014-08-29)
등록번호
US-9519045
(2016-12-13)
발명자
/ 주소
Knoblach, Gerald M.
Frische, Eric A.
Barkley, Bruce Alan
출원인 / 주소
SPACE DATA CORPORATION
대리인 / 주소
Pillsbury Winthrop Shaw Pittman LLP
인용정보
피인용 횟수 :
2인용 특허 :
170
초록▼
Innovative new methods in connection with lighter-than-air (LTA) free floating platforms, of facilitating legal transmitter operation, platform flight termination when appropriate, environmentally acceptable landing, and recovery of these devices are provided. The new systems and methods relate to r
Innovative new methods in connection with lighter-than-air (LTA) free floating platforms, of facilitating legal transmitter operation, platform flight termination when appropriate, environmentally acceptable landing, and recovery of these devices are provided. The new systems and methods relate to rise rate control, geo-location from a LTA platform including landed payload and ground-based vehicle locations, and steerable recovery systems.
대표청구항▼
1. A method to determine a location of a device transmitting wireless signals to a plurality of lighter-than-air (LTA) platforms, the method comprising: taking, at a processor configured to determine the location, signal path delay measurements from the plurality of LTA platforms, wherein the signal
1. A method to determine a location of a device transmitting wireless signals to a plurality of lighter-than-air (LTA) platforms, the method comprising: taking, at a processor configured to determine the location, signal path delay measurements from the plurality of LTA platforms, wherein the signal path delay measurements are determined at the plurality of LTA platforms based on wireless signals received at the plurality of LTA platforms from the device;determining, at the processor, the location of the device transmitting wireless signals based on the signal path delay measurements; andcommunicating, by the processor, the location of the device transmitting wireless signals to an LTA platform. 2. The method of claim 1, wherein one or more of the plurality of the LTA platforms float at an altitude of about 60,000-140,000 feet. 3. The method of claim 1, wherein one or more of the plurality of the LTA platforms have a speed relative to the surface of the earth of less than 100 miles per hour. 4. The method of claim 1, wherein the signal path delay measurements are performed by measuring a difference between a time of arrival of a wireless signal of the device transmitting wireless signals and a standard time. 5. The method of claim 1, wherein the determining the location of the device transmitting wireless signals is based on the signal path delay measurements from at least three independent LTA platforms. 6. The method of claim 1, wherein the device transmitting wireless signals is located (a) on an LTA platform that has landed on the earth, or (b) on a ground-based vehicle. 7. The method of claim 1, wherein the device transmitting wireless signals includes a radiosonde. 8. The method of claim 1, wherein the device transmitting wireless signals includes a landed payload. 9. The method of claim 8, wherein the device transmitting wireless signals includes a payload that has landed on the earth. 10. The method of claim 9, wherein the determining that the device transmitting wireless signals has landed on the earth comprises checking for no shifting of the location of the device transmitting wireless signals. 11. The method of claim 1, wherein the determining the location of the device transmitting wireless signals based on the signal path delay measurements comprises: determining distances from the device to the plurality of LTA platforms;tracing out approximate circles on the earth based on the distances; anddetermining a point of intersection of the circles, wherein the point of intersection is substantially the location of the device transmitting wireless signals. 12. The method of claim 11, wherein the taking signal path delay measurements is taking only two signal path delay measurements. 13. The method of claim 11, wherein the taking signal path delay measurements is performed using sectored or directional antennas. 14. A method to determine a location of a device transmitting wireless signals to one or more (LTA) platforms, the method comprising: taking, at a processor configured to determine the location, signal path delay measurements from an LTA platform, wherein each of the signal path delay measurements is determined at the LTA platform based on a wireless signal received at the LTA platform from the device at a different interval of time;determining, at the processor, the location of the device transmitting wireless signals based on the signal path delay measurements; andcommunicating, by the processor, the location of the device transmitting wireless signals to the LTA platform. 15. The method of claim 14, wherein the signal path delay measurements at different intervals of time from only one LTA platform. 16. The method of claim 14, wherein the device transmitting wireless signals includes a radiosonde. 17. The method of claim 14, wherein the device transmitting wireless signals includes a landed payload. 18. The method of claim 14, wherein the device transmitting wireless signals includes a payload that has landed on the earth. 19. The method of claim 18, wherein the determining that the device transmitting wireless signals has landed on the earth comprises checking for no shifting of the location of the device transmitting wireless signals. 20. The method of claim 14, wherein the signal path delay measurements are performed by measuring a difference between a time of arrival of a wireless signal of the device transmitting wireless signals and a standard time. 21. The method of claim 14, wherein the device transmitting wireless signals is located (a) on an LTA platform that has landed on the earth, or (b) on a ground-based vehicle. 22. The method of claim 14, wherein the determining the location of the device transmitting wireless signals based on the signal path delay measurements comprises: determining a first distance from the device to the LTA platform at a first time instance;tracing out a first approximate circle on the earth based on the first distance;determining a second distance from the device to the LTA platform at a second time instance;tracing out a second approximate circle on the earth based on the second distance; anddetermining a point of intersection of the first and second approximate circles, wherein the point of intersection is substantially the location of the device transmitting wireless signals. 23. The method of claim 14, wherein the taking signal path delay measurements is performed using sectored or directional antennas. 24. An apparatus to determine a location of a device transmitting wireless signals to a plurality of lighter-than-air (LTA) platforms, the apparatus comprising: a communication transceiver to receive signal path delay measurements from the plurality of LTA platforms, wherein the signal path delay measurements are determined based on wireless signals received at the plurality of LTA platforms from the device; anda processor to determine the location of the device transmitting wireless signals based on the signal path delay measurements,wherein the communication transceiver is to communicate the location of the device transmitting wireless signals to an LTA platform. 25. The apparatus of claim 24, wherein one or more of the plurality of the LTA platforms float at an altitude of about 60,000-140,000 feet. 26. The apparatus of claim 24, wherein the signal path delay measurements are performed by measuring a difference between a time of arrival of a wireless signal of the device transmitting wireless signals and a standard time. 27. The apparatus of claim 24, wherein the device transmitting wireless signals is located (a) on an LTA platform that has landed on the earth, or (b) on a ground-based vehicle. 28. The apparatus of claim 24, wherein the device transmitting wireless signals includes a radiosonde. 29. The apparatus of claim 24, wherein the device transmitting wireless signals includes a landed payload. 30. The apparatus of claim 24, wherein, to determine the location of the device transmitting wireless signals based on the signal path delay measurements, the processor is configured to: determine distances from the device to the plurality of LTA platforms;trace out approximate circles on the earth based on the distances; anddetermine a point of intersection of the circles, wherein the point of intersection is substantially the location of the device transmitting wireless signals.
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