[특허]Range/azimuth/elevation ship imaging for ordnance control

Grumman Aerospace Corporation

검색어에 아래의 연산자를 사용하시면 더 정확한 검색결과를 얻을 수 있습니다.
검색연산자

검색도움말
검색연산자	기능	검색시 예
()	우선순위가 가장 높은 연산자	예1) (나노 (기계 \| machine))
공백	두 개의 검색어(식)을 모두 포함하고 있는 문서 검색	예1) (나노 기계) 예2) 나노 장영실
\|	두 개의 검색어(식) 중 하나 이상 포함하고 있는 문서 검색	예1) (줄기세포 \| 면역) 예2) 줄기세포 \| 장영실
!	NOT 이후에 있는 검색어가 포함된 문서는 제외	예1) (황금 !백금) 예2) !image
*	검색어의 *란에 0개 이상의 임의의 문자가 포함된 문서 검색	예) semi*
""	따옴표 내의 구문과 완전히 일치하는 문서만 검색	예) "Transform and Quantization"

과학기술 지식인프라 ScienceON

연합인증

연합인증 가입 기관의 연구자들은 소속기관의 인증정보(ID와 암호)를 이용해 다른 대학, 연구기관, 서비스 공급자의 다양한 온라인 자원과 연구 데이터를 이용할 수 있습니다.

이는 여행자가 자국에서 발행 받은 여권으로 세계 각국을 자유롭게 여행할 수 있는 것과 같습니다.

연합인증으로 이용이 가능한 서비스는 NTIS, DataON, Edison, Kafe, Webinar 등이 있습니다.

한번의 인증절차만으로 연합인증 가입 서비스에 추가 로그인 없이 이용이 가능합니다.

다만, 연합인증을 위해서는 최초 1회만 인증 절차가 필요합니다. (회원이 아닐 경우 회원 가입이 필요합니다.)

연합인증 절차는 다음과 같습니다.

최초이용시에는
ScienceON에 로그인 → 연합인증 서비스 접속 → 로그인 (본인 확인 또는 회원가입) → 서비스 이용

그 이후에는
ScienceON 로그인 → 연합인증 서비스 접속 → 서비스 이용

연합인증을 활용하시면 KISTI가 제공하는 다양한 서비스를 편리하게 이용하실 수 있습니다.

특허 상세정보

MyON담기

내보내기 페이스북 공유 트위터 공유 카카오톡 공유

Range/azimuth/elevation ship imaging for ordnance control

특허상세정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	G01S-013/90
미국특허분류(USC)	343/017; 343/005.CM; 343/007.ED
출원번호	US-0389369 (1982-06-17)
발명자 / 주소	Boles, Sol
출원인 / 주소	Grumman Aerospace Corporation
대리인 / 주소	Geib, Richard G.Tick, Daniel J.Hoffman, Bernard S.
인용정보	피인용 횟수 : 22 인용 특허 : 10

초록
▼

Capability is provided for producing 3 scaled high resolution orthogonal image projections on a CRT of a ship under the influence of translational as well as rotational motions arising from sea state conditions, for the purpose of ship target identification and classification, and the subsequent carrying out of stand-off command weapon guidance to a designated resolution cell of the ship from an airborne platform. Doppler processed interferometric azimuth and elevation angle measurements of the ship scatterers derived from a coherent synthetic aperture radar are combined in a weighted multivariate regression fit using digital signal processing techniques to provide measures of ship translational and rotational motions essential to providing focussed high resolution imagery and precision standoff weapon delivery to the designated ship target resolution cell. The invention also provides a capability for scaling the cross-range (doppler) dimension of Inverse SAR Profile Imagery.

대표
청구항
▼

1. In conjunction with an airborne synthetic aperture radar system having an interferometer antenna and a display, a method for forming high resolution synthetic aperture radar imagery of a ship target under the influence of sea state conditions comprising the steps of: (a) processing the received signals from the scatterers comprising the ship target to obtain estimates of (1) the net doppler producing cross line-of-sight velocity of the radar bearing aircraft relative to the ship, and (2) the net doppler producing velocity in the direction orthogonal to the cross line-of-sight relative velocity and the radar line-of-sight to the center of rotation tracking point of the ship; (b) determining from the estimated doppler producing velocities the values of predetermined system parameters to be used predictively in the succeeding integration interval in forming the high resolution image of the ship target; and (c) displaying the formed imagery of the ship target including a range/azimuth projection, an azimuth/elevation profile projection, and a range/elevation profile projection. 2. In conjunction with an airborne synthetic aperture radar system having an interferometer antenna and a display, a method for forming high resolution synthetic aperture radar imagery of a ship target under the influence of sea state conditions comprising the steps of: (a) processing the received signals from the scatterers comprising the ship target to obtain estimates of (1) the net doppler producing cross line-of-sight velocity of the radar bearing aircraft relative to the ship, and (2) the net doppler producing velocity in the direction orthogonal to the cross line-of-sight relative velocity and the radar line-of-sight to the center of rotation tracking point of the ship; (b) determining from the estimated doppler producing velocities the values of predetermined system parameters to be used predictively in the succeeding integration interval in forming the high resolution imagery of the ship; (c) displaying the formed imagery of the ship target including a range/azimuth projection, an azimuth/elevation profile projection, and a range/elevation profile projection; and (d) forming and displaying an inverse synthetic aperture radar profile image projection of the ship target. 3. In conjunction with an airborne synthetic aperture radar system having an interferometer antenna and a display, a method for forming and displaying high resolution synthetic aperture radar imagery of a ship target under the influence of sea state conditions comprising the steps of: (a) compensating using an estimate of the net doppler producing line-of-sight velocity of the radar bearing aircraft relative to the ship for phase variations in the received signals from the scatterers comprising the ship target resulting from the respective motions of the radar bearing aircraft and the ship; (b) processing in conjunction with azimuth and elevation angle interferometric techniques the compensated received signals to obtain estimates of (1) the error in the estimated net doppler producing line-of-sight velocity of the radar bearing aircraft relative to the ship, (2) the net doppler producing cross line-of-sight velocity of the radar bearing aircraft relative to the ship, and (3) the net doppler producing velocity in the direction orthogonal to the cross line-of-sight to the center of rotation tracking point of the ship; (c) determining from the estimated cross line-of-sight relative velocity and the estimated orthogonal velocity the values of predetermined system parameters to be used predictively in the succeeding integration interval in forming the high resolution imagery of the ship target; and (d) displaying the formed imagery of the ship target. 4. A method as recited in claim 3 wherein the step of processing the compensated received signals includes: (a) measuring interferometrically the azimuth and elevation angles of the received signal in each doppler filter in each range bin; and (b) obtaining from predefined characteristics derived from a weighted multivariate regression fit to the doppler processed azimuth and elevation angle measurement data the estimates of (1) the error in the estimated net doppler producing line-of-sight velocity of the radar bearing aircraft relative to the ship, (2) the net doppler producing cross line-of-sight velocity of the radar bearing aircraft relative to the ship, and (3) the net doppler producing velocity in the direction orthogonal to the cross line-of-sight relative velocity and the radar line-of-sight to the center of rotation tracking point of the ship. 5. A method as recited in claim 4 wherein the displayed imagery of the ship target includes a range/azimuth projection, an azimuth/elevation profile projection, and a range/elevation profile projection. 6. A method as recited in claim 5 including the further steps of forming and displaying an inverse synthetic aperture radar profile image projection of the ship target. 7. A method as recited in claim 6 including the further step of scaling the cross-range dimension of the displayed inverse synthetic aperture radar profile image projection of the ship target. 8. A method as recited in claim 7 including the further step of converting the displayed scaled inverse synthetic aperture radar profile image projection of the ship target to a stretched inverse synthetic aperture radar profile image projection. 9. In conjunction with an airborne synthetic aperture radar system having an interferometer antenna and a display, a method for forming and displaying high resolution synthetic aperture radar imagery of a ship target under the influence of sea state conditions comprising the steps of: (a) steering the pointing of the interferometer antenna boresight to provide radar illumination of the ship target; (b) controlling the range sampling timing so that corresponding samples from pulse-to-pulse over the integration interval correspond to the same range increment of the ship target; (c) compensating using an estimate of the net doppler producing line-of-sight velocity of the radar bearing aircraft relative to the ship for phase variations in the received signals from the scatterers comprising the ship target resulting from the respective motions of the radar bearing aircraft and the ship; (d) measuring interferometrically the azimuth and elevation angles of the compensated received signal in each doppler filter in each range bin; (e) obtaining from selected regression constants derived from a weighted least squares multivariate regression fit to the doppler processed azimuth and elevation angle measurement data estimates of (1) the error in the estimated net doppler producing line-of-sight velocity of the radar bearing aircraft relative to the ship, (2) the net doppler producing cross line-of-sight velocity of the radar bearing aircraft relative to the ship, and (3) the net doppler producing velocity in the direction orthogonal to the cross line-of-sight relative velocity and the radar line-of-sight to the center of rotation tracking point of the ship; (f) determining from the estimated cross line-of-sight relative velocity and the estimated orthogonal velocity the values of predetermined system parameters to be used predictively in the succeeding integration interval in forming the high resolution imagery of the ship target; and (g) displaying the formed imagery including a range/azimuth projection, an azimuth/elevation profile projection, and a range/elevation profile projection of the ship target. 10. A method as recited in claim 9 including the further steps of cursoring a designated resolution cell of the displayed imagery of the ship target; and tracking from aperture to aperture the range and interferometric azimuth angle of the designated resolution target cell. 11. A method as recited in claim 10 including the further step of applying to the cursor location on an aperture to aperture basis a tracking correction to compensate for the rotation of the ship about an axis orthogonal to both the horizontal ship rotational axis and the radar line-of-sight to the center of rotation tracking point of the ship. 12. A method as recited in claim 11 including the further steps of obtaining and utilizing smoothed elevation locational values in forming the displayed azimuth/elevation profile and range/elevation profile image projections of the ship target. 13. A method as recited in claim 12 including the further steps of (a) smoothing using the doppler processed azimuth and elevation angle measurement data obtained over multiple apertures the estimates obtained for (1) the error in the estimated net doppler producing line-of-sight velocity of the radar bearing aircraft relative to the ship, (2) the net doppler producing cross line-of-sight velocity of the radar bearing aircraft relative to the ship, and (3) the net doppler producing velocity in the direction orthogonal to the cross line-of-sight relative velocity and the radar line-of-sight to the center of rotation tracking point of the ship; (b) determining from the smoothed estimated cross line-of-sight relative velocity and the smoothed estimated orthogonal velocity the values of the predetermined system parameters including synthetic aperture radar integration time and pulse repetition frequency and doppler filter bandwidths and spacings to be used predictively in the succeeding integration interval in forming the high resolution imagery of the ship target; and (c) displaying the formed imagery of the ship target. 14. A method as recited in claim 13 including the further steps of forming and displaying an inverse synthetic aperture radar profile image projection of the ship target. 15. A method as recited in claim 14 including the further step of scaling the cross-range dimension of the displayed inverse synthetic aperture radar profile image projection of the ship target. 16. A method as recited in claim 15 including the further step of converting the displayed scaled inverse synthetic aperture radar profile image projection of the ship target to a stretched inverse synthetic aperture radar profile image projection. 17. A method as recited in claim 16 including the further steps of: (a) smoothing using the doppler processed azimuth and elevation angle measurement data obtained over multiple apertures the estimate obtained for (1) the error in the estimated net doppler producing line-of-sight velocity of the radar bearing aircraft relative to the ship, (2) the net doppler producing cross line-of-sight velocity of the radar bearing aircraft relative to the ship, and (3) the net doppler producing velocity in the direction orthogonal to the cross line-of-sight relative velocity and the radar line-of-sight to the center of rotation tracking point of the ship; (b) determining from the smoothed estimated cross line-of-sight relative velocity and the smoothed estimated orthogonal velocity the values of the predetermined system parameters including synthetic aperture radar integration time and pulse repetition frequency and doppler filter bandwidths and spacings to be used predictively in the succeeding integration interval in forming the high resolution imagery of the ship target; and (c) displaying the formed imagery of the ship target. 18. In combination with an airborne synthetic aperture radar system including a multiple section interferometer antenna operatively connected to the input to a two way channel receiver and doppler processing system, and a display operatively connected to the output of said two channel receiver and doppler processing system, image signal processing means for forming and displaying high resolution synthetic aperture radar imagery of a ship target under the influence of sea state conditions comprising: (a) means for obtaining from a weighted multivariate regression fit to the doppler processed interferometric azimuth and elevation angle measurement data the estimates of (1) the error in the estimated net doppler producing line-of-sight velocity of the radar bearing aircraft relative to the ship, (2) the net doppler producing cross line-of-sight velocity of the radar bearing aircraft relative to the ship, and (3) the net doppler producing velocity in the direction orthogonal to the cross line-of-sight relative velocity and the radar line-of-sight to the center of rotation tracking point of the ship, and smoothing using velocities derived from the regression solutions obtained over mulitple apertures smoothed estimates for (1) the error in the net doppler producing line-of-sight velocity of the radar bearing aircraft relative to the ship, (2) the net doppler producing cross line-of-sight velocity of the radar bearing aircraft relative to the ship, and (3) the net doppler producing velocity in the direction orthogonal to the cross line-of-sight relative velocity and the radar line-of-sight to the center of rotation tracking point of the ship, and for determining from the smoothed estimated cross line-of-sight relative velocity and the smoothed estimated orthogonal velocity the values of the predetermined system parameters including synthetic aperture radar integration time and pulse repetition frequency and doppler filter bandwidths and spacings to be used predictively in the succeeding integration interval in forming the high resolution imagery of the ship target; (b) means for compensating using a smoothed estimate of the net doppler producing line-of-sight velocity of the radar bearing aircraft relative to the ship for phase variations in the received signals from the scatterers comprising the ship target resulting from the respective line-of-sight motions of the radar bearing aircraft and the ship; (c) means for forming and displaying scaled range/azimuth, azimuth/elevation, and range/elevation projected images of the ship target, and obtaining and utilizing smoothed elevation locational values in forming the displayed azimuth/elevation and range/elevation image projections; (d) means for forming and displaying an inverse synthetic aperture radar (ISAR) profile image projection of the ship target with scaled cross-range dimensions, and converting the scaled inversed synthetic aperture radar (ISAR) profile image projection of the ship target to a stretched ISAR profile image projection; (e) means for cursoring a designated resolution cell of the displayed imagery of the ship target and for tracking from aperture to aperture the range and interferometrically determined azimuth of the designated resolution target cell, and applying to the cursor location on an aperture to aperture basis a tracking correction to compensate for the rotation of the ship about the axis orthogonal to both the horizontal ship rotational axis and the radar line-of-sight to the center of rotation tracking point of the ship; (f) means for steering the pointing of the interferometer antenna boresight to provide optimum radar illumination of the ship target and image centering along the azimuth and elevation axis; and (g) means for controlling the range sampling timing so that corresponding samples from pulse to pulse over the integration interval correspond to the same range increment of the ship target.

이 특허에 인용된 특허 (10)

이 특허를 인용한 특허 피인용횟수: 22

IPC 상위 출원인

내보내기

상세정보
내보내기 구분	파일저장 인쇄 메일전송
구성항목	관리번호, 국가코드, 자료구분, 상태, 출원번호, 출원일자, 공개번호, 공개일자, 등록번호, 등록일자, 발명명칭(한글), 발명명칭(영문), 출원인(한글), 출원인(영문), 출원인코드, 대표IPC 관리번호, 국가코드, 자료구분, 상태, 출원번호, 출원일자, 공개번호, 공개일자, 공고번호, 공고일자, 등록번호, 등록일자, 발명명칭(한글), 발명명칭(영문), 출원인(한글), 출원인(영문), 출원인코드, 대표출원인, 출원인국적, 출원인주소, 발명자, 발명자E, 발명자코드, 발명자주소, 발명자 우편번호, 발명자국적, 대표IPC, IPC코드, 요약, 미국특허분류, 대리인주소, 대리인코드, 대리인(한글), 대리인(영문), 국제공개일자, 국제공개번호, 국제출원일자, 국제출원번호, 우선권, 우선권주장일, 우선권국가, 우선권출원번호, 원출원일자, 원출원번호, 지정국, Citing Patents, Cited Patents
저장형식	Text(ASCII format) Excel format PIAS분석(.xls)
메일정보	받는사람 (필수) @ 보내는사람 (선택) @ 제목 내용 KISTI 검색결과 이메일 서비스
안내	> 총 건의 자료가 검색되었습니다. > 다운받으실 자료의 인덱스를 입력하세요. (1-10,000) > 검색결과의 순서대로 최대 10,000건 까지 다운로드가 가능합니다. > 데이타가 많을 경우 속도가 느려질 수 있습니다.(최대 2~3분 소요) > 다운로드 파일은 UTF-8 형태로 저장됩니다. 파일의 내용이 제대로 보이지 않을실 때는 웹브라우저 상단의 보기 -> 인코딩 -> 자동선택 여부를 확인하십시오 > ~ > Text(ASCII format) Excel format

과학기술 지식인프라 ScienceON

ScienceON Chatbot

연합인증

특허 상세정보

Range/azimuth/elevation ship imaging for ordnance control

초록
▼

대표
청구항
▼

이 특허에 인용된 특허 (10)

이 특허를 인용한 특허 피인용횟수: 22

IPC 상위 출원인

과제정보

상세정보조회

원문조회

IPC 상세정보(version : 201201)

연구과제 성과물(0)

참여연구원의 다른 문헌(0)

처리중입니다.

잠시만 기다려주세요.

ScienceON Chatbot

연합인증

특허 상세정보

Range/azimuth/elevation ship imaging for ordnance control

초록 ▼

대표청구항 ▼

이 특허에 인용된 특허 (10)

이 특허를 인용한 특허 피인용횟수: 22

IPC 상위 출원인

과제정보

상세정보조회

원문조회

IPC 상세정보(version : 201201)

연구과제 성과물(0)

참여연구원의 다른 문헌(0)

처리중입니다.

잠시만 기다려주세요.

초록
▼

대표
청구항
▼