Tuyen tap bao cao khoa hgc Hoi nghi Khoa hgc ky thuat Do luflng toan quoc Ian thfl IV Hd Ngi, 11-2005
^ DjNH HUdNG CHO DAU TLT DAN TRONG HE THONG DIEU KHIEN TEN LCTA L I E N HOP THEO THONG TIN TLT DAI RADA
TREN M A T DAT
Phgm Trung DUng, Nguyin Duy Hung Tuyen Hoc vien Ky thudt qudn sif
Tdm tdt:
He thd'ng diiu khien ten Ida lien hgi) ket hgi? cdc ifu diem vd khdc phuc cdc nhifffc diem cda cd hai phuong phdp diiu khien tif xa vd dieu khien tif ddn. Trong he thdng ndy.
qud trinh dinh hudng cho ddu tif ddn ddng mgt vai trd rdt quan trgng quye't dinh tdi khd ndng bdt bdm cua ddu tuddn. Ddy Id mgt vd'n di dang rd't difgc quan tdm dcd trong ntfdc vd tren the gidi. Tuy nhien nliung nghien cdu ve van de ndy cdn rd't it difgc cdng hd. Bdi bdo ndy se nghien cihi bdi todn dinh hifdng cho ddu tu ddn trong he thd'ng diiu khien ten Ida lien lupfjj theo thdng tin do ludng tif ddi rada tren mdt ddt.
Bdi todn cd y nghTa ly thuye't vd thifc den trong viec dep can nghien cifu cdc lie thd'ng diiu khien ten lifa hien dgi.
Abstract:
The combined missile control system develops strong points and overcomes shortcoming of both the telecontrol and the homing guidance methods. In this system, the target designation for self-homing plays a determined role. This is an interested question in both our country and the world. However, a few of reseachs in this field are showed. The target designadon for self-homing in the combined missile control system by using data of ground-based radar is investigated in this article. This article has theoretical and practical signification in researching modern missile control systems.
I. DAT VAN DE
Trong cdc id hgp tfin Ifla tdm xa hifin dai dd tang do chfnh xac ddn ngudi ta ihudng sfl dung cac he thd'ng di6u khien kfi't hgp cac phuang phap ddn khac nhau - he thd'ng difiu khidn lifin hgp. Trong dd hfi thdng di6u khien lifin hgp kfi'l hgp cac phuong phap ddn tfl xa - tu din la mdt dang dugc sfl dung rd't phd bifi'n. Hfi thdng nay ke't hgp dflgc cac flu diem, ddng thdi khdc phuc dugc cac nhugc diem vd'n cd cua tflng phuong phap ddn. Trong he thd'ng didu khien nay bai loan djnh hudng cho ddu tu ddn ddng mdt vai trd rd't quan trgng, nd cd anh hudng quyfi't djnh tdi viec bdt, bam sdt cua dau tu ddn. Ban chat cua vific giai quye't bai toan bai toan la cung cd'p lien tuc cac gdc djnh hudng trong cdc mat phing cho ddu lu dan de ddu tu ddn cd the bat dugc muc neu mdt each nhanh nhat. Ve mat nguyfin tdc bdi toan ndy cd the dugc giai quyfi'l bdng cac each tifi'p cdn khac nhau cho tflng trudng hgp cii thd. Tuy nhifin, nhung nghifin cflu ve va'n de nay dang tifi'c la rat it dugc cdng bd'. Trong khudn khd bai bao nay chung tdi se nghifin cflu viec giai bai loan dinh hudng cho ddu tu ddn theo thdng tin tfnh toan trfin mat dd't do dai rada cung ca'p.
IL THUAT TOAN CHI THI MUC TIEU THEO THONG TIN DO DUDC TlTDAI RADA TREN MAT DXT
Trong thuat loan nay, vj trf tuong ddi gifla tfin Ifla-muc tifiu dugc xac djnh theo cac kfi't qua do cua dai rada trfin mat dd't. Cdn cac gdc chi thj muc tifiu cho ddu tu ddn dugc tfnh loan nhu la sai Ifich gifla vj tri cua cac true he toa do lien ke'l gdn vdi tfin Ifla va vi tn' dudng ngam tfin Ifla-muc tieu tai cac thdi didm tuong flng. Cac gia trj nay dflgc tinh toan trfin mat dd't va truyen len tfin Ifla. Gia Ihifi't cdc tham sd chuydn dgng ciaa tfin Ifla da dflgc xac dinh.
Sfl dung cac mdi quan hfi hlnh hgc, cac phep bie^n ddi giua cac hfi true toa do chung ta nhdn dugc thuat toan xac djnh cdc gdc chi thi muc tifiu cho ddu tu ddn trong cdc mat phing gdc ta va mat phing gdc phuong vi. Dd don gian b day chflng ta se khdng dua ra cdc bifi'n ddi trung gian ma chi dua ra kfi't qua cudi cflng dudi dang long quat nhu sau:
. /7n|Ax n„Av «-,-,Az.
a = arcsinf^^— + ^^ -^ -i- -^—) Ar Ar Ar
„ . r ,"-5|Ax: rhyAy n..Az. , Ar Ar Ar Trong do:
AJC = r, cos i^ cos ^^ - r^ cos ip cos pp A_y = r^ sin i^ - Pp sin ip
Az = -Pp cos ip sin ^^ -i- Pp cos ip sin J3p Ar = ^Ax^ -\-Ay^ + Az^
Pp,ip,^p- la cac tham sd'culy, gdc ta, phuotig vj do dugc cfla tfin Ifla.
r^,e^,P^- la cdc tham sd' cfl ly, goc ta, phuang vi do dugc cua muc tieu.
u,j la cac thanh phan cua ma trdn A' = F^D^C^,
vdi Cp - ma trdn cosin dinh hudng khi chuyfi'n tfl hfi toa dd dudng ngam ten Ifla sang he toa dfi da't;
D - ma trdn cosin dinh hudng khi chuyen tfl he toa dd vdn td'c sang hfi toa do dfldng ngdm ten Ifla;
F - ma trdn cosin dinh hfldng khi chuyen tfl he toa dd Hfin kfi't sang he toa dd van tdc.
Cac tham sd trong cac ma trdn cosin dinh hudng dugc xac dinh qua cac tham s6' do vj Iri va td'c dd ten Ifla.
III. KHAO SAT CAC MOI LIEN HE KHI DINH H U S N G DAU T U D A N THEO THUAT T O A N Dk TRINH BAY
Tfl thuat toan neu trfin chung ta nhdn thay cac goc djnh hudng cho ddu tu ddn phu thufic vao ra't nhieu tham s6' cua ca muc lifiu va tfin Ifla. 6 ddy chung ta se chi dfla ra cac kfi't qua khao sdt anh hfldng cua mgt vai tham sd dien hinh. Ddu tifin chung ta khao sat su anh hudng ciia van td'c muc tifiu tdi gid tri gdc dinh hudng Uong cac mat phing gdc ta va phuong vj. Khi nay, gia thifi't ring muc tifiu bay bdng vao dai vdi van tdc khdng ddi va vdi dd cao HMT = 15000; 20000 (m), vdn tdc cua ten ifla Vp = 1900 (m/s), gdc phuong vi ban ddu cua Tfin Ifla la po = ^ ^6, gdc hanh trinh cua muc lifiu Q^ = n/6. Ten Ifla trong giai doan ddu dugc dan bdng phuong phap 3 die'm. K^t qua khao sat dugc md ta trfin hinh 1,2, 3;
H X
Hinh 1. Quan he giua cac goc dinh hudng va van tdc muc tieu (khi H,^^i=15km).
Goc cbl ihl muc lifu tsyl nd )
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0 5
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10
xf^^ --..
,X '< ' •
i iu :s jo Jl
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Hinh 2. Quan he gifla cac goc dinh hudng va van tdc muc tieu (khi H;t,,=20km).
Tie'p theo chiing ta se khao sat quan he gifla cac gdc dinh hudng va do cao muc tifiu.
Khi nay td'c do muc lifiu, tfin Ifla gifl nguyfin khdng ddi. Ke'l qua khao sal dugc mfi ta trfin hinh 3:
^Goccliiiliimuc [ifiu osv( rati lvoiVmi = 10U[lm/i '*^ Goe clii [himuc liGu 0!.y( rad )vai \'jiii = IfXlUm/s
; 5 M M g i ^
Hinh 3. Quan he gifla cac goc djnh hudng va dp cao bay cua muc lieu
IV. KET LUAN
Trfin day chung ta da trinh bay thuat loan chi thj muc tifiu cho ddu tu ddn trong hfi thd'ng dieu khidn ten Ifla lifin hgp theo thdng lin tfl dai rada tren mat ddt. Cac kfi't qua khao sat chflng to rdng cac gdc dinh hudng cho dau tu ddn phu thugc manh vao van tdc muc tieu.
Khi vdn td'c muc tifiu thay ddi thi cdc gdc djnh hudng cung thay ddi theo mdt each rd ret.
Do cao bay muc tieu anh hudng chu yfi'u tdi gdc dinh hudng trong mat phdng gdc ta, ma ft anh hudng tdi gdc dinh hudng trong mat phdng phucmg vi.
Tdi lieu tham khdo:
[I]. Gido trinh Ly thuyet bay vd he thdng diiu khien ten li'fa phdng khdng. T2, 3. Hgc vien KTQS. 1998.
[2]. E.E. Orlov. Thiet ke'he thd'ng diiu khien titxa Ijliek. 2000 (tieng Nga)
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