艦船目標(biāo)單脈沖雷達(dá)三維成像技術(shù)
THREE-DIMENSIONAL IMAGING TECHNIQUE OF SHIP TARGETS WITH MONOPULSE RADAR
-
摘要: 單脈沖雷達(dá)三維像和ISAR像相比與目標(biāo)的物理尺寸相一致，在精密制導(dǎo)中具有重要的意義．本文分析了艦船目標(biāo)三維轉(zhuǎn)動引起的多普勒頻移的特點，提出了在相干處理時間內(nèi)利用解調(diào)頻技術(shù)分離各散射點的方法．針對單脈沖測角會出現(xiàn)的角閃爍現(xiàn)象，給出了處理角閃爍的力法。仿真結(jié)果表明，本文的方法成像質(zhì)量較好。
-
關(guān)鍵詞:
- 單脈沖雷達(dá);艦船目標(biāo);三維成像
Abstract: Monopulse radar three-dimensional(3-D)images coincide with targets'size,but ISAR imaging does not hold,which is importantin precision guidance.The movement character of ship targets and the Doppler frequency induced by targets'3-D rotation are analysed,and dechirping technique to separate scatterers in coherent processing interval is proposed.For angle glint induced in angle measurement by monopulse radar,a method for processing such case is achieved.Simulation results show the high quality of monopulse 3-D images. -
Wehner D R．High Resolution Radar．Boston,London：Artrch House，1994，408-414,435-465.[2]Chen C C，Andrews H C.Target-motion-induced radar imaging,IEEE Trans[J].on Aerosp.Elec tron. Syst.1980,AES-16(1):2-14[3]Ausherman D A,Kozma A，Walker J L,Jones H M，Poggio E C．Developments in radar imaging, IEEE Trans．On Aerosp，Electron．Syst.,1984,AES-20(4)：363-400.[4]Jain A,Patel I.SAR/ISAR Imaging of a nonuniformly rotating target,IEEE Trans.on Aerosp. Electron.Syst.，1992,AES-28(1)：317-321.[5]王根原，保錚，孫曉兵 基于勻加速多普勒頻率模型的ISAR成像．電子學(xué)報，1997，25(6)：58-61[6]Berizzi F,Diani M，Target angular motion effects on ISAR imaging.IEE Proc.-F,1997,144(2): 87-96[7]保錚，王根原，羅琳．逆合成孔徑雷達(dá)的距離-瞬時多普勒成像方法．電子學(xué)報，1998，26(12)：79-83. -
計量
- 文章訪問數(shù): 2058
- HTML全文瀏覽量: 91
- PDF下載量: 517
- 被引次數(shù): 0
下載:
