[특허]Multilateration system and method

Multilateration system and method 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	G01S-013/06 G01S-003/02 G01S-013/00
출원번호	US-0367538 (2012-02-07)
등록번호	US-8232913 (2012-07-31)
우선권정보	GB-0807586.3 (2008-04-26); GB-0812096.6 (2008-07-03)
발명자 / 주소	Weedon, Robert John
출원인 / 주소	Roke Manor Research Limited
대리인 / 주소	Banner & Witcoff, Ltd.
인용정보	피인용 횟수 : 0 인용 특허 : 38

초록 ▼

A multilateration system and method includes a plurality of receiver stations for receiving signals from an aircraft, and a controller that derives the position of the aircraft by applying a multilateration process to outputs from the receiver stations. For this purpose, the controller determines the altitude of the aircraft and selects a multilateration process that is to be used for position determination, based on the determined altitude.

대표청구항 ▼

1. A multilateration system comprising: a plurality of receiver stations configured to receive aircraft signal data; anda controller configured to derive aircraft positional data by applying a multilateration process to at least some of the aircraft signal data, wherein the controller is configured to i) determine an altitude associated with the aircraft signal data;ii) choose a multilateration process based on the determined altitude; andiii) perform the chosen multilateration process to determine an aircraft position. 2. The system of claim 1, wherein the controller is configured to perform the multilateration process using the aircraft signal data and the determined altitude. 3. The system of claim 1, wherein the controller is configured to: use the aircraft signal data to create aircraft track data; andstore the aircraft track data to a memory. 4. The system as claimed in claim 3, wherein the aircraft track data comprises at least one of a mode type indicator, a mode code, and a position. 5. The system as claimed in claim 3, wherein the controller comprises a locator having logic configured to: compare i) the determined aircraft position provided by the chosen multilateration process with ii) a predicted aircraft position extrapolated from the aircraft track data; andupdate the aircraft track data stored in the memory with the determined aircraft position if the comparison is within a certain threshold. 6. The system of claim 1, wherein the controller comprises a locator having control logic configured to: i) determine a number of the receiver stations that provide the aircraft signal data to the controller,ii) determine from the aircraft signal data a geometry of the receiver stations that provide the aircraft signal data to the controller,iii) determine whether the geometry will support a three dimensional multilateration,iv) perform the three dimensional multilateration if the geometry is determined to support the three dimensional multilateration; andv) perform a two dimensional or two dimensional augmented multilateration if the geometry is not determined to support the three dimensional multilateration. 7. An air-traffic control system comprising: a multilateration system that includes: a plurality of receiver stations configured to receive aircraft signal data, anda controller configured to derive aircraft positional data by applying a multilateration process to at least some of the aircraft signal data, wherein the controller is configured to i) determine an altitude associated with the aircraft signal data,ii) choose a multilateration process based on the determined altitude, andiii) perform the chosen multilateration process to determine an aircraft position; anda tracker system configured to display to a system operator aircraft track data provided by the chosen multilateration system. 8. A multilateration method comprising: receiving an aircraft code at a plurality of receiver stations; andderiving aircraft positional data by applying a multilateration process to the received aircraft code, wherein the deriving includes: determining an altitude associated with the received aircraft code;choosing a multilateration process based on the determined altitude; andperforming the chosen multilateration process to determine an aircraft position. 9. The method of claim 8 wherein the determined altitude is a barometric altitude obtained from the received aircraft code. 10. A method of claim 8, wherein the choosing of the multilateration process comprises comparing the determined altitude with one or more threshold values to determine the multilateration process. 11. A method of claim 8, further comprising: storing data associated with the received aircraft code as aircraft track data in a memory. 12. The method of claim 11, further comprising: comparing the determined aircraft position provided by the chosen multilateration process with an extrapolated position from the aircraft track data; andupdating the aircraft track data in the memory with the determined aircraft position if the comparison results in a match. 13. The method of claim 8, further comprising: displaying the determined aircraft position to an operator.

이 특허에 인용된 특허 (38)

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Effland John E. (336 Wye Mill Ct. Gaithersburg MD 20879) Gipson John M. (8209 Grove St. Silver Spring MD 20901) Shaffer David B. (1742 Saddleback Ct. Henderson NV 89014) Webber John C. (3249 Betsy La, Method and system for measuring the position of lightning strokes.
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