Research of performance of circular array light source in underwater wireless LED optical communication
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摘要: 为了研究水下无线LED光通信中圆形阵列光源性能，以6个LED组成的圆形阵列光源为对象，基于单个LED空气中照度分布模型推导出其相对照度分布数学模型；以水下照度计为工具，用点阵测量法研究其在水下的实际空间照度分布，并分析了实验数据。结果表明，该光源出射端口处光照度值随着加载信号的频率增加而增加，光源的水下辐射照度整体分布不对称；当光信号传播到一定距离后，在光接收平面上，照度值各向趋于均匀分布。Abstract: In order to study the performance of circular array light source in underwater wireless light-emitting diode (LED) optical communication, the mathematical model of the relative intensity of illumination distribution was deduced choosing a circular array light source composed of 6 LEDs as the research object and based on the distribution model of a single LED illumination in the air. The actual underwater illumination distribution was measured with an illuminometer based on the dot matrix measurement method. The experimental data were analyzed. The results show that the intensity of illumination in the output port of the light source increases with the increase of the carrier signal frequency. The whole underwater illumination distribution of the light source is asymmetry. When the optical signal was transmitted to a certain distance, the illumination intensity tends to distribute more evenly in the light receiving plane.
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