[특허]Laser designator and repeater system for sensor fuzed submunition and method of operation thereof

Textron Systems Corporation

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특허 상세정보

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내보내기 페이스북 공유 트위터 공유 카카오톡 공유

Laser designator and repeater system for sensor fuzed submunition and method of operation thereof

특허상세정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	G01C-003/08
미국특허분류(USC)	356/005.01; 356/003.01; 356/003.1; 356/004.01; 356/004.1; 356/005.1
출원번호	US-0548028 (2006-04-25)
등록번호	US-8208130 (2012-06-26)
발명자 / 주소	McConville, Richard P. Nardone, Ralph
출원인 / 주소	Textron Systems Corporation
대리인 / 주소	Onello & Mello LLP
인용정보	피인용 횟수 : 0 인용 특허 : 7

초록
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In a sensor-fuzed munition system and method, the munition is provided with an additional laser designator/repeater mode of operation. In the laser designator/repeater mode, the munition has the option of initiating a target strike additionally based on whether a laser appointer energy is detected as being present on the target. The laser appointer energy signal is generated at a wavelength that is consistent with the wavelength of the laser rangefinder of the munition, and is generated based on the detected presence of a designator signal at a designator spot on the target. The laser appointer signal is directed to the designator spot and detected by the munition laser rangefinder receiver. In one embodiment, the repeater system for detecting the designator signal and for generating the appointer signal is provided on the delivery vehicle for the submunition. This additional mode of operation is preferably achieved using the existing laser receiver of the rangefinder hardware, with minimal additional hardware and software systems for detecting and processing the additional laser appointer signal energy. In this manner, collateral damage and false-target firings are decreased to near-zero probability.

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1. A system for engaging a munition with a target, comprising: an autonomous munition, including: a rangefinder comprising: a laser transmitter that transmits a first laser energy to a remote target;a laser receiver that receives a reflected portion of the first laser energy as reflected by the remote target within a scanned field of view of the laser receiver and that receives a reflected portion of a second laser energy as reflected by the remote target within the scanned field of view of the laser receiver; anda range module that determines a range of the remote target from the reflected portion of the first laser energy; andan illumination module that determines whether the reflected portion of the second laser energy is present within the scanned field of view of the laser receiver;a laser designator that generates third laser energy; anda laser repeater that receives the third laser energy as reflected by the remote target, and, in response, transmits the second laser energy to the remote target. 2. The system of claim 1 wherein the first laser energy and the second laser energy are of wavelengths that are substantially the same so that the laser receiver of the rangefinder can receive both the first laser energy and the second laser energy. 3. The system of claim 2 wherein the third laser energy is of a wavelength that is different than that of the first laser energy and the second laser energy. 4. The system of claim 1 wherein the first laser energy is pulsed and wherein the second laser energy is modulated. 5. The system of claim 1 wherein the laser repeater is located at an airborne delivery vehicle that delivers the autonomous munition. 6. The system of claim 1 wherein the third laser energy is incident at the remote target and illuminates a third laser energy spot on the remote target, and wherein the second laser energy is incident at the remote target and illuminates a second laser energy spot on the remote target. 7. The system of claim 6 wherein the second laser energy spot and the third laser energy spot overlap. 8. The system of claim 1 wherein the laser transmitter and laser receiver comprise a rangefinder for determining the range of the munition with respect to the target. 9. The system of claim 1 wherein the illumination module comprises a filter circuit that passes energy within an expected frequency band of the second laser energy. 10. The system of claim 1 wherein the second laser energy is modulated and wherein the illumination module includes a circuit that discriminates the second laser energy to determine whether the modulation in the second laser energy is present. 11. The system of claim 10 wherein the second laser energy is amplitude modulated. 12. The system of claim 10 wherein the second laser energy is phase modulated. 13. The system of claim 10 wherein the second laser energy is frequency modulated. 14. The system of claim 1 wherein the scanned field of view of the laser receiver translates in an inward-spiral scan pattern during operation of the munition. 15. The system of claim 14 wherein the inward-spiral scan pattern has an inter-scan spacing between adjacent spiral scan segments. 16. The system of claim 15 wherein the second laser energy is incident at the remote target and illuminates a spot of a width that is larger than the inter-scan spacing. 17. The system of claim 1 wherein the autonomous munition further comprises a warhead that is activated in response to whether the reflected portion of the second laser energy is present within the scanned field of view of the laser receiver. 18. The system of claim 1 wherein the autonomous munition further comprises a passive infrared receiver that receives infrared energy emitted by the remote target within a scanned field of view of the infrared receiver. 19. A method for engaging a munition with a target comprising: transmitting first laser energy within a transmission field of view;receiving a reflected signal including a reflected portion of the first laser energy as reflected by a remote target within a receiver field of view;illuminating the remote target with a third laser energy;detecting the illumination of the remote target by the third laser energy and illuminating the remote target with a second laser energy; and determining whether the reflected signal further includes a reflected portion of the second laser energy as reflected by the remote target within the receiver field of view, wherein the third laser energy is incident at the remote target and illuminates a third laser energy spot on the remote target, and wherein the second laser energy is incident at the remote target and illuminates a second laser energy spot on the remote target, and wherein the second laser energy spot and the third laser energy spot overlap. 20. The method of claim 19 wherein the first laser energy and the second laser energy are of wavelengths that are substantially the same. 21. The method of claim 20 wherein the third laser energy is of a wavelength that is different than that of the first laser energy and the second laser energy. 22. The method of claim 19 wherein detecting the illumination of the remote target occurs at an airborne delivery vehicle that delivers the munition at which the transmission of the first laser energy and the reception of the first and second laser energy occur. 23. The method of claim 19 further comprising engaging the target as a result of the step of determining. 24. The method of claim 23 wherein engaging the target comprises engaging the target when it is determined that the reflected signal includes the second laser energy. 25. The method of claim 23 wherein engaging the target comprises engaging the target with a warhead. 26. The method of claim 19 further comprising modulating the second laser energy for illuminating the remote target. 27. The method of claim 26 wherein determining comprises discriminating the second laser energy using a bandpass filter that is centered at a frequency equal to that of a modulation frequency of the second laser energy. 28. The method of claim 26 further comprising amplitude-modulating the second laser energy. 29. The method of claim 26 further comprising frequency-modulating the second laser energy. 30. The method of claim 26 further comprising phase-modulating the second laser energy. 31. The method of claim 19 wherein the receiver field of view translates in an inward-spiral scan pattern during operation of the munition. 32. The method of claim 31 wherein the inward-spiral scan pattern has an inter-scan spacing between adjacent spiral scan segments. 33. The method of claim 32 wherein illuminating comprises illuminating the remote target with the second laser energy of a spot size of a width that is larger than the inter-scan spacing. 34. The method of claim 19 further comprising receiving an infrared signal at a passive infrared receiver including infrared energy emitted by the remote target within a scanned field of view of the infrared receiver. 35. A method for engaging a munition with a target comprising: transmitting first laser energy within a transmission field of view;receiving a reflected signal including a reflected portion of the first laser energy as reflected by a remote target within a receiver field of view;illuminating the remote target with a third laser energy;detecting the illumination of the remote target by the third laser energy and illuminating the remote target with a second laser energy; and determining whether the reflected signal further includes a reflected portion of the second laser energy as reflected by the remote target within the receiver field of view, wherein detecting the illumination of the remote target occurs at an airborne delivery vehicle that delivers the munition at which the transmission of the first laser energy and the reception of the first and second laser energy occur. 36. A method for engaging a munition with a target comprising: transmitting first laser energy within a transmission field of view;receiving a reflected signal including a reflected portion of the first laser energy as reflected by a remote target within a receiver field of view;illuminating the remote target with a third laser energy;detecting the illumination of the remote target by the third laser energy and illuminating the remote target with a second laser energy; anddetermining whether the reflected signal further includes a reflected portion of the second laser energy as reflected by the remote target within the receiver field of view,wherein the receiver field of view translates in an inward-spiral scan pattern during operation of the munition, and wherein the inward-spiral scan pattern has an inter-scan spacing between adjacent spiral scan segments. 37. The method of claim 36 wherein illuminating comprises illuminating the remote target with the second laser energy of a spot size of a width that is larger than the inter-scan spacing.

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Laser designator and repeater system for sensor fuzed submunition and method of operation thereof

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Laser designator and repeater system for sensor fuzed submunition and method of operation thereof

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