[특허]Method and device for the detection and track of targets in high clutter

The United States of America as represented by the Secretary of the Army

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

Method and device for the detection and track of targets in high clutter

특허상세정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	G01S-013/52
미국특허분류(USC)	342/160; 342/026; 342/159
출원번호	US-0346157 (2003-01-16)
발명자 / 주소	Madewell, J. Michael
출원인 / 주소	The United States of America as represented by the Secretary of the Army
대리인 / 주소	Phillips Roger C.
인용정보	피인용 횟수 : 11 인용 특허 : 10

초록
▼

A method for discriminating and tracking a target in a clutter cloud includes transmitting a radar signal at a signal bandwidth to: identify a range extent of a clutter cloud; determine a centroid and a velocity growth rate of the clutter cloud; and identify a direction of movement of the centroid of the clutter cloud. The method may also include locking a another radar signal having a greater signal bandwidth onto the centroid of the clutter cloud whereby the centroid is tracked within one radar range resolution bin; providing a delay line that includes at least two Doppler filters and is configured to cover a Doppler frequency range corresponding to a velocity growth rate of the clutter cloud; and processing a reflected radar signal corresponding to the greater signal bandwidth. The processing of the reflected radar signal may comprise passing the reflected radar signal through the delay line to mitigate a portion of the reflected signal that is reflected by the clutter cloud. A system and apparatus for performing the method is also provided.

대표
청구항
▼

1. A method for discriminating and tracking a target in a clutter cloud, comprising:transmitting a first radar signal at a first signal bandwidth for searching and locating a clutter cloud;transmitting a second radar signal at a second signal bandwidth to:identify a range extent of a clutter cloud;determine a centroid and a velocity growth rate of the clutter cloud; andidentify a direction of movement of the centroid of the clutter cloud;locking a third radar signal having a third signal bandwidth onto the centroid of the clutter cloud whereby the centroid is tracked within one radar range resolution bin;providing a delay line comprising at least two Doppler filters, the delay line being configured to cover a Doppler frequency range corresponding to a velocity growth rate of the clutter cloud; andprocessing a reflected radar signal corresponding to the third signal bandwidth, the processing of the reflected radar signal comprising passing the reflected radar signal through the delay line to mitigate a portion of the reflected signal that is reflected by the clutter cloud. 2. The method of claim 1, wherein:determining a centroid is carried out by determining a peak range bin of a reflected signal corresponding to the second signal bandwidth; anddetermining a range extent and a velocity growth rate and identifying a direction of movement of the centroid are carried out using Kalman filtering. 3. The method of claim 1, wherein processing the reflected radar signal includes providing a sliding window coherent integration routine. 4. The method of claim 1, wherein the at least two Doppler filters comprise a plurality of moving target indicator (MTI) filters. 5. The method of claim 4, wherein the MTI filters comprise n-tap MTI filters, where n is in the range of from 2 to 5. 6. The method of claim 4, wherein the delay line is configured to delay each of the MTI filters by the pulse repetition frequency of the transmitted third radar signal. 7. The method of claim 1, wherein processing the reflected radar signal includes taking the fast Fourier transform of the reflected radar signal. 8. The method of claim 1, wherein the first signal bandwidth is narrower than the second signal bandwidth and the third signal bandwidth is narrower than the second signal bandwidth. 9. The method of claim 1, wherein the first signal bandwidth comprises a narrow bandwidth, the second signal bandwidth comprises a medium bandwidth, and the third signal bandwidth comprises a wide bandwidth. 10. The method of claim 1 wherein transmitting the first radar signal includes transmitting at a first pulse repetition frequency (PRF) and wherein identifying a direction of movement of the centroid of the clutter cloud is carried out at a second PRF that is less than the first PRF. 11. A radar system for tracking a target in a cloud of clutter, comprising:a transmitter configured to selectively transmit a radar signal at a first radar bandwidth, at a second radar bandwidth, and at a third radar bandwidth;a receiver configured to receive a first reflected radar signal at the first radar bandwidth, a second reflected radar signal at the second radar bandwidth, and a third reflected signal at a third radar bandwidth;at least one processor interconnected with the receiver and the transmitter and being configured to:locate a clutter cloud and target based on the first reflected radar signal;actuate the transmitter in order to lock the second radar signal at the second radar bandwidth onto the clutter cloud;identify a range extent of the-clutter cloud and to calculate a centroid, a velocity growth rate and a direction of movement of the centroid of the clutter cloud based on the second reflected radar signal;actuate the transmitter in order to lock the third radar signal at the third radar bandwidth onto the centroid of the clutter cloud;provide a delay line comprising at least two Doppler filters, the delay line being configured to cover a Doppler frequency range correspo nding to a velocity growth rate of the clutter cloud; andprocess the third reflected radar signal corresponding to the third radar bandwidth by passing the reflected radar signal through the delay line to mitigate a portion of the third reflected radar signal that is reflected by the clutter cloud. 12. The device of claim 11, wherein the delay line comprises (N) time delay circuits interspersed between (N) Doppler filters and wherein a time delay of each of the time delay circuits is (1/N) of the pulse repetition frequency period. 13. The device of claim 11, wherein the at least one Doppler filter comprises at least one n-tap tap moving target indicator (MTI) filter where n is in the range of from 2 to 5. 14. The device of claim 12, wherein N=8 and wherein each of the Doppler filters comprises a five tap moving target indicator (MTI) filter. 15. The device of claim 11, wherein the processor is further configured to perform a fast Fourier transform of the reflected radar signal. 16. The device of claim 11, wherein the processor is further configured to perform a sliding window coherent integration routine on the reflected radar signal. 17. The device of claim 11, wherein the processor is further configured to include a zero velocity filter. 18. A method for discriminating and tracking a target in a clutter cloud, comprising:transmitting a radar signal at a signal bandwidth to:identify a range extent of a clutter cloud;determine a centroid and a velocity growth rate of the clutter cloud; andidentify a direction of movement of the centroid of the clutter cloud;locking a another radar signal having a greater signal bandwidth onto the centroid of the clutter cloud whereby the centroid is tracked within one radar range resolution bin;providing a delay line comprising at least two Doppler filters, the delay line being configured to cover a Doppler frequency range corresponding to a velocity growth rate of the clutter cloud; andprocessing a reflected radar signal corresponding to the greater signal bandwidth, the processing of the reflected radar signal comprising passing the reflected radar signal through the delay line to mitigate a portion of the reflected signal that is reflected by the clutter cloud. 19. The method of claim 18, wherein:determining a centroid is carried out by determining a peak range bin of a reflected signal corresponding to the lesser signal bandwidth; anddetermining a range extent and a velocity growth rate and identifying a direction of movement of the centroid are carried out using Kalman filtering. 20. The method of claim 18, wherein processing the reflected radar signal includes providing a sliding window coherent integration routine. 21. The method of claim 18, wherein the at least two Doppler filters comprises a plurality of moving target indicator (MTI) filters. 22. The method of claim 21, wherein the MTI filters comprise n-tap MTI filters where n is in the range of from 2 to 5. 23. A radar system for tracking a target in a cloud of clutter, comprising:a transmitter configured to selectively transmit a radar signal at a first radar bandwidth and at a second radar bandwidth;a receiver configured to receive a first reflected radar signal at the first radar bandwidth and a second reflected radar signal at the second radar bandwidth;at least one processor interconnected with the receiver and the transmitter and being configured to:identify a range extent of the clutter cloud and to calculate a centroid, a velocity growth rate and a direction of movement of the centroid of the clutter cloud based on the first reflected radar signal;actuate the transmitter in order to lock the second radar signal at the second radar bandwidth onto the centroid of the clutter cloud;provide a delay line comprising at least two Doppler filters, the delay line being configured to cover a Doppler frequency range corresponding to a velocity growth rate of the clutter cloud; andprocess the second reflected radar signal corresponding to the second radar bandwidth by passing the reflected radar signal through the delay line to mitigate a portion of the second reflected signal that is reflected by the clutter cloud. 24. The device of claim 23, wherein the delay line comprises (N) time delay circuits interspersed between (N) Doppler filters and wherein a time delay of each of the time delay circuits is (1/N) of the pulse repetition frequency period. 25. The device of claim 23, wherein the at least one Doppler filter comprises at least one n-tap tap moving target indicator (MTI) filter where n is in the range of from 2 to 5. 26. The device of claim 24, wherein N=8 and wherein each of the Doppler filters comprises a five tap moving target indicator (MTI) filter. 27. The device of claim 23, wherein the processor is further configured to perform a fast Fourier transform of the reflected radar signal. 28. The device of claim 23, wherein the processor is further configured to perform a sliding window coherent integration routine on the reflected radar signal. 29. The device of claim 23, wherein the processor is further configured to include a zero velocity filter.

이 특허에 인용된 특허 (10)

이 특허를 인용한 특허 피인용횟수: 11

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

Method and device for the detection and track of targets in high clutter

초록
▼

대표
청구항
▼

이 특허에 인용된 특허 (10)

이 특허를 인용한 특허 피인용횟수: 11

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

Method and device for the detection and track of targets in high clutter

초록 ▼

대표청구항 ▼

이 특허에 인용된 특허 (10)

이 특허를 인용한 특허 피인용횟수: 11

IPC 상위 출원인

과제정보

상세정보조회

원문조회

IPC 상세정보(version : 201201)

연구과제 성과물(0)

참여연구원의 다른 문헌(0)

처리중입니다.

잠시만 기다려주세요.

초록
▼

대표
청구항
▼