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首页> 外文会议>International Symposium on Antennas and Propagation >Portable wide-band channel sounder based software defined radio for studying the radio propagation in an outdoor environment
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Portable wide-band channel sounder based software defined radio for studying the radio propagation in an outdoor environment

机译：基于便携式宽带信道探测仪的软件定义的无线电，用于研究室外环境中的无线电传播

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摘要

Recently, applying the multimedia wireless sensor networks and computer vision techniques in the outdoor agriculture field can be observed. Since the performance of such techniques is limited by the low data rate of the wireless sensor network, the transmission using the wider bandwidth is one of the possible solutions. This paper proposes the technique to develop the wide-band channel sounder for investigating the wideband propagation characteristic in such outdoor environment by utilizing only the low cost and simple narrow-band software defined radio system. It can be realized by synchronizing the timing between the transmitter and the receiver over the air using the power detection approach as well as implementing the multitone-overlapping frequency stepping technique for the wideband coverage. The validation test in the laboratory was performed to verify the proposed channel sounder.
机译：近来，可以观察到在户外农业领域中应用多媒体无线传感器网络和计算机视觉技术。由于这种技术的性能受到无线传感器网络的低数据速率的限制，因此使用较宽带宽的传输是可能的解决方案之一。本文提出了一种开发宽带信道探测仪的技术，该技术可通过仅利用低成本，简单的窄带软件定义的无线电系统来研究这种室外环境中的宽带传播特性。这可以通过使用功率检测方法在空中同步发送器和接收器之间的时序以及为宽带覆盖实施多音重叠频率步进技术来实现。在实验室中进行了验证测试，以验证提议的声道探测仪。

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