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- At last,a simulation example of main lobe clutter power for low altitude and ... 最后給出了一低空遠界理論彈道主瓣雜波功率的仿真樣例。
- The actual-3 dB main lobe width is a bit wider than in the ideal case that neglects the element size. 結果表明:陣元寬度對主瓣半功率點(diǎn)寬度的影響非常有限,而且不同的陣元寬度造成的半功率點(diǎn)寬度之間的差異也很小。
- For short biphase codes,the main lobe to sidelobe ratio of pulse compression is low,so sidelobe suppression is necessary. 二相碼信號是一類(lèi)常見(jiàn)的脈沖編碼信號,但碼較短時(shí),匹配濾波的主副比不高,需要采用旁瓣抑制技術(shù)。
- Based on uniform line array,the sonar equation of active sonar beam main lobe and side lobe interfered by noise-jammer are presented. 研究了噪聲干擾器對魚(yú)雷主動(dòng)聲吶的對抗原理,以等間隔直線(xiàn)陣為例,分別給出了干擾器對魚(yú)雷主動(dòng)聲吶主瓣和旁瓣的干擾方程。
- The directivity of forming beam are prominent, the width of main lobe is distinct, and producing wavy plan with more powerful, which make for scanning in space. 形成波束指向性突出，主瓣寬度明顯，延時(shí)產(chǎn)生的波陣面能量較強，有利于空間掃描。
- The result reveals that small geometric focal length and large angle may decrease the -3dB focal area, and increase length to width ratio and the pressure magnitude of main lobe. 由結果得知，曲率半徑愈小張角愈大會(huì )導致燒灼面積減小、長(cháng)寬比增加以及壓力主峰值的提高。
- Virtually LPI guide radar is a radar which stacks up against with ESM receiver of target in system detection sensitivenes,therefore in the system design it should consider the technology measures emphaticaly to ensure its antenna main lobe LPI capability. LPI制導雷達實(shí)質(zhì)上是一種從系統上與目標的ESM接收機進(jìn)行探測靈敏度較量的雷達,因此在系統設計上應著(zhù)重考慮使其天線(xiàn)主瓣LPI的技術(shù)措施。
- This method more effectively suppresses spatial nonstationary and stationary noise than the adaptive null-forming beamformer method by using a rotatable main lobe in the 2-D plane. 該方法克服了自適應零限波束形成只能抑制空間相干噪聲的缺點(diǎn),并得到可在二維平面上旋轉的波束主瓣。
- In the other hand, after pulse compression processing, the output signal's main lobe will be extended and its amplitude or phase will be modulated, and the range resolution will descend too. 由于信號帶寬的損失，脈壓輸出回波信號的主瓣展寬，距離分辨力下降；另外，主瓣幅度或相位還會(huì )受到調制。
- Simulation results show that with 13 unit lasers, a beam with the flatness of less than 1% in the optimizing region can be achieved.The main lobe contains over 95% of the total power. 計算結果表明：13個(gè)單元光源所合成的遠場(chǎng)光束可在優(yōu)化區域內達到平坦度小于1%25，對應主峰包含95%25以上的總能量。
- IJF coding refers to converting digital baseband signal into Intersymbol Interference and Jitter Free baseband signal.It has the features of narrower spectral main lobe and faster roll off. IJF編碼是一種將基帶信號轉換為無(wú)符號間干擾和抖動(dòng)的信號，其主瓣窄，頻譜滾降快。
- Main lobe offset frequency cancellation 主瓣偏頻對消
- First, it keeps clutter down in the main code. 首先,使主要代碼中的混亂減少。
- The main impediment to growth is a lack of capital. 影響發(fā)展的主要障礙是缺乏資本。
- Crowds thronged the main square of the city. 城里的大廣場(chǎng)上擠滿(mǎn)了人群。
- The whole school (was) assembled in the main hall. 全校在大禮堂集合。
- The main feature on the program is her song. 那個(gè)節目的主要號召物是她的歌。
- Fables often have animals as the main characters. 寓言常以動(dòng)物為主角。
- A heavy snowfall block the main road. 一次嚴重的降雪阻塞了主要公路。
- The gas main explode and set fire to the house. 煤氣總管爆炸引起房子失火。
