CTLS 4 SNR. Multi Reference CTLS Method for Passive Localization of Radar Targets

Transcription

1 دا ند رعا ل» ی و ناوری ج ه ع ی و ی «ع وم C 4 * Donloaded from ad.r a 9: on Frda arch nd (9/06/4 : 90/05/7 : ) DOA. DOA. C DOA.. C.. C SR.. C.C DOA : ul Reference C ehod for Pave Localzaon of Radar arge H. orba Fard *, F. Hojja Kahan, Y. oruz,. Aahbar Ilamc Azad Unver Souh ehran Branch (Receved: 8/08/0; Acceped: 09/04/0) Abrac Pave arge localzaon ha man applcaon n elecronc arfare and pave defene. DOA he mo accurae mehod n arge localzaon. Follong h mehod, one of he recever agned a reference recever and me dfference of arrval beeen oher recever and reference recever meaured. he arge locaon emaed b proceng of hee DOA. he C one of DOA baed algorhm ha ha hgh accurac and need uable nalzaon. In h paper, mul reference C algorhm propoed. C algorhm accurac a mproved hen mul reference recever are condered nead of one reference recever. Smulaon reul ho ha he propoed algorhm n dfferen SR, keep mprovemen ju h lle ncreae of me proceng and beer performance compared o C algorhm ha been obaned. Keord: arge Localzaon, DOA, C. * Correpondng auhor E-mal:hamdhf@ahoo.com Pave Defence Sc. & ech. 0,, 79-85

2 9 80 Donloaded from ad.r a 9: on Frda arch nd ( ).. (... ).. ) (DOA 5 ) (RSS 4 (AOA 6 ).... (FDOA 7 ) DOA.. (CC ).[ ].. [ 4 ] A=b W..[4]. A. LC..[5] W Chan. Acve Pave 4 Receved Sgnal Srengh 5 me Dfferenal of Arrval 6 Angle of Arrval 7 Frequenc Dfferenal of Arrval.. ELI. ELI. ELI... ELI ELI. SR ELI. ELI.. ELI.. ELI ELI.. PRF. Elecronc Inellgence

3 8... C Donloaded from ad.r a 9: on Frda arch nd 09. : r = cτ = ( ) + ( ) ( ) + ( ) (). rˆ = c ˆ τ = ( ) + ( ) ( ) + ( ) + n : () (4) =,,..., (4). -. DOA.[9-4]. (4).( ) -. C. DOA.[9] C. (4) r + r = r : ( 4) ( 5) (5) ( )( ) + ( )( ) + r r = (( ) + ( ) ) + r A θ = b ( 6) : : (7).[6] LC chan..[4 7] CW..[8] b A b A.[9] (C).. C C C.. C. C DOA 4. C 5 C. 6 DOA. p=[ ] r =[ ], =,,. (τ ) ( ) + ( ) τ = c : () DOA. c.[0] DOA τ = τ τ = j ( ) + ( ) c : ( ) + ( ) c ()

4 F 9 8 Donloaded from ad.r a 9: on Frda arch nd 09 : ϑ = [ ] ϑ ϑ r = + = ϑ ϑ (8) F ( θ ) = A ϑ + A ϑ ϑ b GG = Aϑ + A ( ϑ ϑ ) b = F ( ϑ) A : (9).[A A ]=A. A F ( ϑ) A A C. ϑ = ϑ Ψ 0 α ϑ= ϑ 0 δ = F δϑ F ϑ ϑ Ψ = a ϑ= ϑ0 : (0) : () () C.4 C. C..... C +R. R R= R= (6) + ( ) () r + r r = =,,..., r r A = r (8) θ = r (9) ( ) + ( ) r ( ) ( ) b= + r ( ) ( ) r + (0) b θ A. r (7) A r θ ˆ ˆ θ = arg mn( Aθ b) ( A ˆ θ b ) ˆ θ = ( A A ) A b r : () C A r. b A b 0 A 0. b=b 0 + b A=A 0 + A : b A [ 0 0 G n] b G n (), = n=[n,n,,n ] A = A 0θ = b 0 G = -dag G =I - :. (r,r,,r ) A θ b = Aθ b = r G n G n = Gn () (4) : A θ b = Gn mn = n θ, n (5) n n= G Aθ-b A G = G GG : (6) C θ = G Aθ -b G Aθ -b ( ) = Aθ - -b GG Aθ -b = A θ -b GG Aθ -b : (7) r

5 8... C Donloaded from ad.r a 9: on Frda arch nd 09 p = r r p = H H H H H = () : (8) () (). C ϑ () C. C.5 CLL. [0 0; 5 0; 0 5; -5 0; 0-5] 5 (0,90) RS 0000 C...-5 C CRLB C () C. (). 0 0 C C C. () C. (4) : () r r ( m ) ( m ) = (4) =,,..., (5) = r : d d. r d ( ) (6) = ( ). : (7) d d. = (7) r d ( ) ( ) (7 6) : Hp = (8) d 0 d 0 d( ) 0 H = 0 d 0 d 0 d( ) p : (9) ( ) = (0) ( )

6 9 84 Donloaded from ad.r a 9: on Frda arch nd 09 C (5). C C C..-5 (6) ALAB 009a. Ram 4GB CPU Core Duo.5GHz (6) C (6) C 0 / R S E (m ) C Ce mng error() C C R S E (m ) R S E (m ) CRLB C Ce mng error() CRLB C Ce mng error() CRLB C Ce R S E (m ) mng error() 0-7 ().4

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