spaceborne radar 中文意思是什麼

spaceborne radar 解釋
航天雷達
  • spaceborne : 在宇宙空間運行的；由宇宙飛船運載的。
  • radar : n 〈美國〉【無線電】 〈radio detecting and ranging 之略〉 雷達，無線電探測器 （＝〈英國〉 radiolo...
  1. The conventional sphere model of earth and circle model of orbit are discarded, and the ellipsoid model and the ellipse model are selected for further research, which achieves a method to determine the target position through the antenna pointing direction. and the spaceborne sar system design and simulation software is brought forth. this software accomplishes sar system coefficients design for antenna area, pulse repetition frequency, signal bandwidth, downlink data rate, radar transmitter power and satellite platform yaw steering

    本文從星載雷達的星地幾何關系入手，舍棄傳統星載合成孔徑雷達研究中的球地球模型和圓軌道模型，研究了在地球橢球模型和橢圓軌道模型下由雷達天線確定目標坐標的方法，並在此基礎上研製了星載合成孔徑雷達系統設計與模擬軟體，完成雷達系統天線尺寸、脈沖重復頻率、信號帶寬、雷達信號數據率、雷達發射功率、衛星平臺的偏航牽引等幾個方面的系統參數設計以及雷達多普勒特性、雷達系統模糊、雷達定位及精度的分析，最後完成雷達回波信號的模擬。
  2. Owing to the anisotropic and the biharmonic nature of microwave radar backscatter on spaceborne scatterometer, and to the scatter model function nolinear and the existence of various noise sources in the measurements in addition to the model function, the retrieval wind results consist of as many as four wind directions

    由於衛星散射計探視雷達回波的各向異性的雙調和性質，同時由於散射物理模型函數的非線性及信號中存在噪聲，使得常規點方式風場反演中風向有多至4個解的多解存在。
  3. Finding remains of the sui dynasty wall by spaceborne radar imagery is helping archaeologists to map a major cultural feature that has been buried by desert sands for generations

    航天雷達拍攝到的隋代長城遺跡的照片，有助於考古學家們描繪那些世代掩埋在大漠黃沙中的文明遺存。
  4. Radar altimeter is a kind of very important microwave sensing instrument for observing the earth, and there are a lot of key technologies involved in the high resolution spaceborne radar altimeter ( hrsbralt ). the principle of hrsbralt, the acquisition and track methods, the if simulation, the closed loop internal calibration method, the pulse repeat frequency ( prf ) design, and the ocean - land compatible altimeter design are studied in this dissertation

    雷達高度計是一種重要的微波遙感儀器，本文就高解析度星載雷達高度計的工作機理、跟蹤方法、大時帶積在軌閉環內校準以及海陸兼容等內容進行了深入的研究，具體包括以下八個方面的內容： （ 1 ）深入研究了星載雷達高度計的工作機理，並對典型雷達高度計系統進行了分析。
  5. The software has been used in many projects such as dual - frequency multi - polarization and multi - modes sar system, environment disaster inspection and forecasting sar satellite etc. this dissertation first considers the geometry relations between spaceborne radar and the earth targets

    該軟體已經在雙頻多極化多模式合成孔徑雷達、環境災害監測預報合成孔徑雷達小衛星等多個項目中得到了應用。
  6. This method offers more precise geometry for spaceborne sar system design and simulation. 3. in the analyzing on the radar doppler properties, under the ellipsoid earth model and ellipse orbit model, considering the earth rotation, the radar doppler properties with different orbit eccentricity are compared, and the fact that orbit eccentricity affects doppler frequency rate is found

    在雷達多普勒特性分析中，論文採用橢球地球模型和橢圓軌道模型，結合地球的自轉，通過不同偏心率下雷達多普勒特性的比較，研究了軌道偏心率對合成孔徑雷達系統設計與模擬軟體研究雷達多普勒調頻斜率的影響。
  7. 5. on the aspect of spaceborne sar simulation, after thoroughly analyzing on the representative spaceborne sar simulator, we grasp the spaceborne sar operation procedure, and present a system simulation approach based on radar signal flow

    在星載合成孔徑雷達模擬方面，論文在其它星載雷達模擬方法分析基礎上，把握星載合成孔徑雷達的工作流程，提出了基於雷達實際工作方式的系統模擬方案。
  8. For the high - speed digital signal processing, the structure of fpga and dsp is widespreadly adopted. dsp is more featured in the implementation of complicated algorithm, while field programming gate array ( fpga ) shows more advantage in its flexibility of design, simplicity of system configuration, modification and maintenance. in the paper, the hardware system of the spaceborne radar is based on the structure of fpga and dsp, of which the signal processing part is accomplished with one fpga chip and multi dsps

    Dsp適合完成結構復雜的演算法;現場可編程邏輯陣列（ fpga ）適合完成高效、演算法固定的任務;與專用集成電路（ asic ）相比， fpga優點主要在於其很強的靈活性、可在線配置、修改和維護方便等優點。本文工程中的星載雷達信號處理和控制系統就是採用dsp + fpga的方式。其中信號處理採用的是xilinx公司的virtex -和virtex系列fpga和多片analogdevices公司的tigersharcts101的硬體電路結構。
  9. There has been increasing interest in the research of ionospheric effects on spaceborne synthetic aperture radar ( sar ) these years in the world

    及時開展該領域的研究，對我國長遠發展星載sar系統有重要的現實意義。
  10. Nowadays spaceborne synthetic aperture radar ( sar ) is a focus of the research work in the remote areas because of its superiority

    星載合成孔徑雷達（ sar ）因為它的眾多的優點越來越成為研究的熱點。
  11. This dissertation adopts the modularization programming method to develop the spaceborne sar system design and simulation software, which obtains the windows common interface and logical integrated structure, convenient for usage, maintenance and function extension. 2. as for the earth model and orbit model, according to the properties of spaceborne sar operation, in this dissertation, we reject the sphere earth model and circle orbit model and present a novel way to solve spaceborne geometry relations between radar and target by three ellipses, and achieve the way to determine the target position by antenna pointing direction

    在地球模型和軌道模型方面，論文根據星載合成孔徑雷達工作的特點，摒棄了球地球和圓軌道的傳統模型，創新性的採用三個橢圓解決了星載雷達的星地幾何關系問題，得到了在地球橢球模型和橢圓軌道模型下由雷達天線指向確定目標坐標的方法，為星載合成孔徑雷達系統設計與模擬提供了更為精確的幾何基礎。
  12. The spaceborne sar raw data simulator can simulate the echo of the radar, which could be used in the test of the new spaceborne sar system design

    而星載sar分佈目標原始數據模擬可以模擬生成自然地面場景的雷達回波，用於新的星載sar系統的檢驗。
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