Method for the blind wideband localization of one or more transmitters from a carrier that is passing by
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
H01Q-003/00
H04B-005/00
Q01S-003/02
출원번호
US-0085253
(2005-03-22)
등록번호
US-7400297
(2008-07-15)
우선권정보
FR-04 03295(2004-03-30)
발명자
/ 주소
Ferreol,Anne
Heurguier,Dominique
출원인 / 주소
Thales
대리인 / 주소
Lowe Hauptman Ham & Berner, LLP
인용정보
피인용 횟수 :
7인용 특허 :
2
초록▼
A method for localizing one or more sources, the source or sources being in motion relative to a network of sensors, comprises a step for the separation of the sources in order to identify the direction vectors associated with the response of the sensors to a source at a given incidence. The method
A method for localizing one or more sources, the source or sources being in motion relative to a network of sensors, comprises a step for the separation of the sources in order to identify the direction vectors associated with the response of the sensors to a source at a given incidence. The method comprises the following steps of associating the direction vectors a1p(1)m . . . aKp(K)m obtained for the mth transmitter and, respectively, for the instants t1 . . . tK and for the wavelengths λp(1) . . . , λp(k), and localizing the mth transmitter from the components of the vectors a1p(1)m . . . aKp(K)m measured with different wavelengths.
대표청구항▼
What is claimed is: 1. A method for localizing one or more sources, the sources being in motion relative to a network of sensors, the method comprising the following steps: separating the sources in order to identify the direction vectors associated with the response of the sensors to a source at a
What is claimed is: 1. A method for localizing one or more sources, the sources being in motion relative to a network of sensors, the method comprising the following steps: separating the sources in order to identify the direction vectors associated with the response of the sensors to a source at a given incidence; associating the direction vectors a1p(1)m . . . a(K)m obtained for the mth source and, respectively, for the instants t1 . . . tK and for the wavelengths λp(1) . . . , λp(K), and localizing the mth source from the components of the vectors a1p(1)m . . . a(K)m; wherein, in considering that, for each pair, (tk,λp(k)), Mk vectors akp(k)j (1k) have been identified, where Mk is the number of sources at k, the step of association for K pairs (tk,λp(k)) comprises the following steps: 1) resetting of the process at k=0, m=1 and number of sources M=1 and, for all triplets (tk,λp(k),j), resetting a flag of association with a source flagkj at flagkj=0; 2) searching for an index j and a pair (tk,λp(k)) such that the flag, flagkj=0; 3) for first triplet (tk,λp(k),j) obtained at the step 2, effecting flagkj=1 and resetting a test flag of association with the source of the first triplet linkk'i=0 for k'≠k and i'≠j and indm={k} and Φm={akp(k)j}; 4) determining the pair (tk',λp(k')) minimizing a distance dkk between pairs (tk',λp(k')) and (tk,λp(k)) such that kεindm in the time-frequency space and in which there exists at least one vector bi=ak'p(k')i such that flagk'i=0 and linkk'i=0; 5) in using the relationship (4) defined here above, determining the index i(m) that minimizes the difference between the vectors akp(k)m such that kεindm and the vectors bi identified with the instant-wavelength pairs (tk',λp(k')) for (1k') and flagk'i=0 and linkk'i=0; 6) setting linkk'i(m)=1: the test of association has been performed; 7) if d(akp(k)m, bi(m))k-tk'|max then: Φm={Φm bi(m)}, indm={indmk'}, flagk'i(m)=1; 8) if there is at least one doublet (tk',λp(k')) and one index i such that linkk'i=0, then repeating the steps from the step 4; 9) defining the family of vectors Φm={a1p(1)m . . . aK(m),p(K(m)),m} associated with the source indexed by m in writing K(m)=cardinal(Φm); and 10) from the family of vectors Φm={a1p(1),m . . . aK(M),p(K(M)),m}, extracting the J instants tiεindJ⊂indm which correspond to aberrant points located outside a defined zone; 11) returning to the step 3) if there is at least one triplet (tk,λp(k),j) such that flagkj=0. 2. The method according to claim 1 wherein the localizing step comprises the following steps: maximizing a criterion of standardized vector correlation LK(x,y,z) in the position space (x,y,z) of a source with where Wk is the noise vector for all the positions (x, y, z) of a source. 3. The method according to claim 2, wherein the vector bK comprises a noise-representing vector whose components are functions of the components of the vectors a1m . . . aKm. 4. The method according to claim 3, comprising a step to compare the maximum values with a threshold value. 5. The method according to claim 3, wherein the transmitters to be localized are mobile and wherein the vector considered is parametrized by the position of the source to be localized and the speed vector. 6. A method according to claim 2, comprising a step in which the matrix of covariance R=E[WKWKH] of the noise vector is determined, and wherein the following criterion is maximized 7. The method according to claim 6, wherein the assessment of the criterion LK(x,y,z) and/or the criterion LK'(x,y,z) is recursive. 8. The method according to claim 7, comprising a step to compare the maximum values with a threshold value. 9. The method according to claim 7, wherein the transmitters to be localized are mobile and wherein the vector considered is parametrized by the position of the source to be localized and the speed vector. 10. The method according to claim 6, comprising a step to compare the maximum values with a threshold value. 11. The method according to claim 6, wherein the transmitters to be localized are mobile and wherein the vector considered is parametrized by the position of the source to be localized and the speed vector. 12. The method according to claim 2, comprising a step to compare the maximum values with a threshold value. 13. The method according to claim 2, wherein the transmitters to be localized are mobile and wherein the vector considered is parametrized by the position of the source to be localized and the speed vector. 14. The method according to claim 1, comprising a step to compare the maximum values with a threshold value. 15. The method according to claim 14, wherein the transmitters to be localized are mobile and wherein the vector considered is parametrized by the position of the transmitter to be localized and the speed vector. 16. The method according to claim 1, wherein the transmitters to be localized are mobile and wherein the vector considered is parametrized by the position of the source to be localized and the speed vector. 17. The method according to claim 1, comprising a step to compare the maximum values with a threshold value. 18. The method according to claim 1, wherein the transmitters to be localized are mobile and wherein the vector considered is parametrized by the position of the source to be localized and the speed vector.
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