IPC분류정보
국가/구분 |
United States(US) Patent
등록
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국제특허분류(IPC7판) |
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출원번호 |
US-0453215
(2003-06-03)
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우선권정보 |
CH-200201001 (2002-06-12) |
발명자
/ 주소 |
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출원인 / 주소 |
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대리인 / 주소 |
McCormick, Paulding & Huber LLP
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인용정보 |
피인용 횟수 :
6 인용 특허 :
11 |
초록
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A method of tracking a target (2) moving in an airspace and a target tracking system (10) for performing the method are described. A search sensor (12) searches a search space at a first clock rate (2&pgr;/&Dgr;T1) and establishes target information in regard to a track (4) flown through by the targ
A method of tracking a target (2) moving in an airspace and a target tracking system (10) for performing the method are described. A search sensor (12) searches a search space at a first clock rate (2&pgr;/&Dgr;T1) and establishes target information in regard to a track (4) flown through by the target (2). Calculation means (16) extrapolate an expected flight path (6) from the target information established and provide flight path data, which describes the expected flight path (8), to a tracking sensor (14), which covers a tracking space (15), and provides this data at a second clock rate (2&pgr;/&Dgr;T2), which is higher than the first clock rate (2&pgr;/&Dgr;T1). When the target (2) reaches the tracking space (15), the tracking sensor (14) is aimed at the expected flight path (6) on the basis of the flight path data provided, the target (2) is detected as soon as it is detectable by the tracking sensor (14), and the tracking sensor (14) is tracked on the target autonomously.
대표청구항
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1. A method of tracking a target moving in an airspace, wherein a search space is searched with the aid of a search sensor in multiple passes in a first clock rate (2&pgr;/&Dgr;T1) and target information being established in this way which describes a track flown through by the target,an expected
1. A method of tracking a target moving in an airspace, wherein a search space is searched with the aid of a search sensor in multiple passes in a first clock rate (2&pgr;/&Dgr;T1) and target information being established in this way which describes a track flown through by the target,an expected flight path is extrapolated with the aid of calculation means from the target information established from at least two passes, and flight path data, which describes the expected flight path, is provided for a tracking sensor, which covers a tracking space,the flight path data, which describes the extrapolated expected flight path, is transmitted to the tracking sensor with the aid of transmission means at a second clock rate (2&pgr;/&Dgr;T2), which is higher than the first clock rate (2&pgr;/&Dgr;T1), and when the target reaches the tracking space, the tracking sensor is aimed at the expected flight path with the aid of aiming means on the basis of the transmitted flight path data, independently of the detectability of the target,the target is detected with the aid of detection means as soon as it is detectable by the tracking sensor, andthe tracking sensor is tracked on the target autonomously with the aid of tracking means.2. The method according to claim 1, wherein the search sensor and the tracking sensor have different search characteristics. 3. The method according to claim 1, wherein the tracking sensor is positioned spatially separated from the search sensor in a known relative position to the search sensor, andthe calculation of the flight path data is performed while taking the known relative position of the tracking sensor to the search sensor into consideration.4. The method according to claim 1, wherein processing of data is performed at least partially by a calculation unit assigned to the search sensor or by a calculation unit of the calculation means assigned to the tracking sensor. 5. The method according to claim 1, wherein the relative position of the tracking sensor to the search sensor is determined with the aid of search means which are assigned to the search sensor and/or to the tracking sensor. 6. The method according to claim 1, wherein further flight path data for a further tracking sensor is calculated with the aid of the calculation means, andthe further flight path data is transmitted to the further tracking sensor with the aid of the transmission means.7. The method according to claim 1, wherein the flight path data or data based on the flight path data is transmitted to an auxiliary system with the aid of communication means. 8. The method according to claim 1, wherein the search space is searched for a second target with the aid of the search sensor and in this way second target information is established, which describes a second track flown through by the second target,expected flight path data, for use by at least one tracking sensor and at least one auxiliary system, is provided with the aid of the calculation means.9. The method according to claim 1, wherein filter means of the tracking sensor are preset while taking the flight path data into consideration. 10. The method according to claim 1, wherein the flight path data is calculated while taking time delays caused by the system into consideration. 11. A target tracking system for tracking a target moving in an airspace, having a search sensor, which is designed for the purpose of searching a search space in multiple passes using a first clock rate (2&pgr;/&Dgr;T 1), and having a tracking sensor, which is designed for the purpose of tracking the target in a tracking space, wherein the search sensor has: first detection means, which are implemented for the purpose of detecting target information, which describes a track flown through by the target, during at least some of the passes; the target tracking system has: calculation means, which are implemented for the purpose of extrapolating an expected flight path of the target and calculating flight path data which describes the expected flight path from the target information and transmission means, which are implemented for the purpose of transmitting at least the data containing the target information to the calculation means and at least the flight path data which describes the extrapolated flight path to the tracking sensor, in order to provide the flight path data for the tracking sensor at a second clock rate (2&pgr;/&Dgr;T 1), which is higher than the first clock rate (2&pgr;/&Dgr;T1); andthe tracking sensor has: aiming means, which are implemented for the purpose of aiming the tracking sensor at the expected flight path ( 6) on the basis of the flight path data provided and independently of the detectability of the target, second detection means, which are implemented for the purpose of detecting the target as soon as it has reach the tracking space and is detectable, and tracking means, which are implemented for the purpose of tracking the tracking sensor on the detected target autonomously as soon as it is detected by the detection means. 12. The target tracking system according to claim 11, wherein the search sensor and the tracking sensor have different search characteristics. 13. The target tracking system according to claim 11, wherein the search sensor has a search characteristic having a greater range than the tracking sensor. 14. The target tracking system according to claim 11 wherein the search sensor has a search characteristic having a search space which is broader than the tracking space of the tracking sensor. 15. The target tracking system according to claim 11, wherein the search sensor has multiple search units. 16. The target tracking system according to claim 11, wherein the search sensor has at least one radar sensor. 17. The target tracking system according to claim 11 wherein the detection means of the search sensor are implemented for the purpose of detecting a track of the target in the space from the target information. 18. The target tracking system according to claim 11, wherein the tracking sensor is an infrared sensor, preferably an FLIR sensor. 19. The target tracking system according to claim 11, wherein the tracking sensor is implemented in such a way that it may be aimed automatically at the expected flight path by the aiming means, independently of the automatic detection of the target. 20. The target tracking system according to claim 11, wherein the tracking means for autonomous tracking of the tracking sensor are implemented for manual and/or automatic tracking of the tracking sensor. 21. The target tracking system according to claim 11, wherein the tracking sensor is not fixed. 22. The target tracking system according to claim 11, wherein the tracking sensor is positioned spatially separate from the search sensor and in a known relative position to the search sensor, andthe calculation means are implemented for the purpose of calculating the flight path data while taking the relative position into consideration.23. The target tracking system according to claim 11, wherein the search sensor and/or the tracking sensor have search means for establishing the relative position of the tracking sensor to the search sensor. 24. The target tracking system according to claim 11, wherein at least a part of the calculation means form a calculation unit assigned to the search sensor or to the tracking sensor. 25. The target tracking system according to claim 11, wherein the calculation means are implemented for the purpose of calculating further flight path data for at least one further tracking sensor, andthe transmission means are implemented for the purpose of transmitting the further flight path data to the further tracking sensor.26. The target tracking system according to claim 11, wherein the tracking sensor includes communication means, which allow transmission of the flight path data to at least one auxi liary system, the relative position of the at least one auxiliary to the search sensor or the tracking sensor being known, andthe calculation means being implemented for the purpose of calculating flight path data for analysis by the at least one auxiliary system.27. The target tracking system according to claim 26, wherein the auxiliary system has at least one, preferably mobile weapon carrier like a gun or a rocket launcher. 28. The target tracking system according to claim 11, wherein the search sensor is implemented for the purpose of searching its search space for a second target and establishing second target information. 29. The target tracking system according to claim 11, wherein the tracking sensor has filter means, which may be preset while taking the flight path data into consideration. 30. The target tracking system according to claim 11, wherein the calculation unit is implemented for the purpose of including time delays caused by the system in the calculation of the flight path data, in order to compensate for the time delays during tracking of the tracking sensor.
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