Passive radar detector for dualizing missile seeker capability
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
F41G-007/00
F42B-015/01
출원번호
US-0688480
(2003-10-20)
발명자
/ 주소
Smith, Brian J.
Rock, Janice C.
출원인 / 주소
The United States of America as represented by the Secretary of the Army
대리인 / 주소
Chang Hay Kyung
인용정보
피인용 횟수 :
7인용 특허 :
14
초록▼
Applicants' Passive Radar Detector for Dualizing Missile Seeker Capability incorporates passive RF detectors into a standard active MMW seeker missile with a minimum requirement for hardware modifications. Anti-radiation homing (ARH) antennas and down conversion elements are added to the missile and
Applicants' Passive Radar Detector for Dualizing Missile Seeker Capability incorporates passive RF detectors into a standard active MMW seeker missile with a minimum requirement for hardware modifications. Anti-radiation homing (ARH) antennas and down conversion elements are added to the missile and coupled to existing signal-processing hardware. The added antennas intercept the air defense radar emission signals and the conversion elements convert the intercepted signals to the intermediate frequency (IF) usable by the MMW radar. The IF can then be processed by signal processor that already exists as a part of the MMW seeker.
대표청구항▼
1. In a missile having an active radar seeker, said seeker operating at a given intermediate frequency and comprising a millimeter wave radar and antenna, first local oscillator, a first mixer, an analog-to-digital converter, a first switch coupled between said first mixer and said converter, and a
1. In a missile having an active radar seeker, said seeker operating at a given intermediate frequency and comprising a millimeter wave radar and antenna, first local oscillator, a first mixer, an analog-to-digital converter, a first switch coupled between said first mixer and said converter, and a digital signal processor, said processor containing therein and using a set of logic capable of identifying threat radar signals, what is claimed is a means for dualizing said missile's seeker capability, said dualizing means being located within said missile and passively detecting target air defense radars, said dualizing means further cooperating with said active millimeter wave radar seeker to guide said missile toward a more accurate impact on said air defense radars, said dualizing means comprising a plurality of identical radio frequency detectors, each of said frequency detectors comprising: an anti-radiation homing antenna positioned to collect radar frequency from said air defense radar; a second local oscillator, the frequency of said second oscillator being selectively adjustable; a second mixer coupled between said anti-radiation homing antenna and said second oscillator to mix said radar frequency and said adjustable frequency to produce an intermediate frequency usable by said active seeker; and a means for coupling said intermediate frequency to said analog-to-digital converter, ultimately to enable said missile to impact on said air defense radar for a more complete destruction of said defense radar. 2. In a missile having an active radar seeker, a means for dualizing seeker capability as set forth in claim 1, wherein said means for coupling said intermediate frequency to said analog-to-digital converter is a second switch coupled between said second mixer and said converter, said second and first switches never being concurrently open. 3. A seeker capability dualizing means as set forth in claim 2, wherein said plurality of identical radio frequency detectors comprises at least three sensors having three corresponding anti-radiation homing antennas, wherein said antennas are disposed at regular intervals along the circumference of said missile so as to enable the production of data relative to azimuth and elevation of said missile with respect to said target air defense radar. 4. A seeker capability dualizing means as set forth in claim 3, wherein said multiple detectors are multiplexed to said converter such that their respective second switches are selectively activated in coordination with each other as well as with said first switch. 5. In a missile having an active millimeter wave radar seeker, said seeker operating at a given intermediate frequency and comprising a millimeter wave radar and antenna, first local oscillator, a first mixer, an analog-to-digital converter, a first switch coupled between said first mixer and said converter, and a digital signal processor, said processor containing therein and using a set of logic capable of identifying threat radar signals, what is claimed is a passive detector added to supplement said active seeker, said passive detector detecting target air defense radars and cooperating with said active seeker to guide said missile toward a more accurate impact on said air defense radars, said passive radar detector comprising four identical radio frequency sensors, said frequency sensors being disposed at regular space intervals along the circumference of said missile and each sensor comprising: an anti-radiation homing antenna positioned to collect radar frequency from said air defense radar; a second local oscillator, the frequency of said second oscillator being selectively adjustable; a second mixer coupled between said anti-radiation homing antenna and said second oscillator to mix said radar frequency and said adjustable frequency to produce an intermediate frequency usable by said active seeker; and a means for coupling said intermediate frequency to said analog-to-dig ital converter, ultimately to enable said missile to impact on said air defence radar for a more complete destruction of said radar.
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이 특허에 인용된 특허 (14)
Sun John (Thousand Oaks CA) Sanders Ross J. (Newbury Park CA) Starace Ralph C. (Camarillo CA) Hackman William K. (Thousand Oaks CA), Air defense destruction missile weapon system.
Sykes Langthorne (Manhattan Beach CA) Russell Duane J. (China Lake CA) Atkinson Robert E. (China Lake CA), Monopulse receiver circuit for an anti-radar missile tracking system.
Dryer, Richard L., Multi-function radio frequency (MFRF) module and gun-launched munition with active and semi-active terminal guidance and fuzing sensors.
Ruff,William C.; Stann,Barry L.; Shen,Paul H.; Redman,Brian C.; Aliberti,Keith M., Systems and methods for performing active LADAR and passive high resolution imagery.
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