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首页> 外文会议>Applied Laser Radar Technology >Heterodyne laser radar array receivers for the mitigation of target-induced speckle
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Heterodyne laser radar array receivers for the mitigation of target-induced speckle

机译：外差激光雷达阵列接收器，用于减轻目标引起的斑点

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摘要

Abstract: We investigated a space diversity optical heterodyne array receiver for optimal coherent detection of finite transverse coherence length fields. In such an array receiver, each of the independent IF signals are appropriately phase-shifted and summed to generate a single IF signal with improved statistical qualities. In this paper we show that the advantages offered by a coherent array are both an increased average carrier-to-noise ratio and a reduction in carrier fading. We also show that the equal gain diversity reception technique performs almost as well as the maximal ratio technique with significantly less hardware complexity. Finally, we present the experimental results from a two element, one micron, laboratory breadboard ladar system. !4
机译：摘要：我们研究了空间分集光学外差阵列接收器，用于有限横向相干长度场的最佳相干检测。在这样的阵列接收机中，每个独立的IF信号被适当地相移并相加以产生具有改善的统计质量的单个IF信号。在本文中，我们证明了相干阵列所提供的优势既可以提高平均载噪比，又可以减少载流衰落。我们还表明，等增益分集接收技术的性能几乎与最大比率技术一样好，并且硬件复杂度大大降低。最后，我们展示了由两种元素（一微米）实验室面包板激光系统组成的实验结果。 ！4

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