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- Antenna Pattern Measurement Test 天線(xiàn)方向圖測試試驗
- Accurate measurement of antenna pattern is important to spaceborne SAR image application, and distributed target antenna pattern measurement is widely concerned. 天線(xiàn)方向圖的準確測量,對星載SAR圖像的應用具有重要作用。 分布目標輻射定標在星載SAR天線(xiàn)方向圖測試中受到廣泛重視。
- Spaceborne SAR Antenna Pattern Measurement Based on Amazon Tropic Rain Forest 亞馬遜熱帶雨林星載SAR輻射定標算法
- antenna pattern measurement 天線(xiàn)方向圖測量
- The method for antenna VSWR,gain and pattern measurement by using the VNA and its time domain option is introduced. 介紹了利用矢量網(wǎng)絡(luò )分析儀的時(shí)域功能測量天線(xiàn)系統駐波系數、增益和方向圖的方法。
- Map: DCCI Internet Data Center issued Fu Zhihua, deputy director of the "2008 China's Internet users IUI index measuring test data. 圖為：DCCI互聯(lián)網(wǎng)數據中心副主任傅志華發(fā)布“2008年中國互聯(lián)網(wǎng)用戶(hù)測量試數據IUI指數”。
- It is convenient to measure the RCS, and the antenna pattern by this system having resolutions of both the turning angle of 1/36 degree and the echo signal voltage of 2.5mV. 該系統具有1/36度的轉角分辨能力和2.;5mV的回波電壓分辨能力;適用于目標RCS、天線(xiàn)方向性圖等測量。
- A double population genetic algorithm (DPGA) is presented and applied to synthesize the array antenna pattern by controlling only the current amplitudes. 提出一種雙種群遺傳算法(DPGA)優(yōu)化陣元電流幅度,以實(shí)現對陣列天線(xiàn)方向圖的綜合。
- The reasons are analyzed,and a modification method is presented, in which DSR controls antenna pattern used by transmitting node,part of packets are sent with omni-antenna and the others are sent with directional antenna. 分折了此現象產(chǎn)生原因,并提出了一個(gè)改進(jìn)方法; 由DSR協(xié)議參與控制分組發(fā)送時(shí)使用的天線(xiàn)模式,對部分影響協(xié)議性能最為嚴重的分組采用全向發(fā)送,其余分組使用方向天線(xiàn)發(fā)送。
- In this paper some salient features and advantages of DAR are described,and some problems associated with space-time signal processing and antenna pattern are discussed,finally a self-cohering method using beamforming technique is introduced. 本文論述了它的一些突出特點(diǎn)和優(yōu)點(diǎn),討論了空時(shí)信號處理與天線(xiàn)方向圖的一些問(wèn)題,最后介紹了利用自適應波束形成獲得自相干的方法。
- However, the optimal results being a statistical average, the antenna pattern of random phasing is unsteady with the scanning angle and scanning period, so it is not easy to form the actually needed codes for control of the antenna scanning. 應用遺傳算法對隨機饋相方案進(jìn)行優(yōu)化，能有效抑制寄生副瓣的出現，形成掃描空域確定的波控代碼，實(shí)現相控陣波束無(wú)慣性的精確指向。
- The thesis not only provided the Lagrange multiplier algorithm for designing the desample filter, but also the algorithm was designed to take account the effect of the antenna pattern of the SAR used in collecting the raw data. 論文不僅提出了使用拉格朗日乘子法對降采樣濾波器的設計方法而且在設計中考慮了天線(xiàn)方向圖的影響。
- This method took advantage of both nodal test and measurement test and overcame their disadvantages. 該組合方法融合測量檢測和節點(diǎn)檢測方法的各自?xún)?yōu)點(diǎn)且克服各自的缺點(diǎn)。
- The door may be supported in a horizontal plane during the pull force measurement test. 在拉力測量期間，可以在水平面內對門(mén)進(jìn)行支承。
- Figure 4-44 shows a basic superconductor resistance measurement test system using the combination of a Model 2182A Nanovoltmeter and a Model 6220 Current Source for measuring the resistance. 圖4-44示出一個(gè)基本的測量超導體電阻的測試系統。該系統使用2182A型納伏表和6220型電流源來(lái)測量電阻。
- The jammer and fuzes under test are physical models, while the antenna patterns of the jammer and fuzes, the trajectory, the space geometric disposal of ECCM field tests are in their mathematical models. 彈丸彈道、引信和干擾機的天線(xiàn)方向圖、空間幾何配置等為數學(xué)模型,由微機和有關(guān)接口構成混合仿真系統。
- The target for this topping pattern measures down to 21.60 which is a 7% profit. 這個(gè)頭肩形的目標跌至位為21.;60美元，將帶來(lái)7%25的盈利。
- TC101 has up to now mainly concentrated on basic electrostatics measurements test methods, and the requirements of the electronics industry. 技術(shù)委員會(huì )101 （TC101）迄今主要關(guān)注基本的靜電測量測試方法和電子工業(yè)的需求。
- Compare body measurements to pattern measurements to make length or width adjustments. 把測體尺寸與樣板尺寸比較,然后調整長(cháng)度或寬度。
- Based on a 300MW axial-flow RCP model, a measurement test rig with high temperature and ultra-high pressure is designed. 針對300MW軸流式核主泵模型，設計了內流測量實(shí)驗臺，提出高溫超高壓系統的生成辦法；
