An unmanned aerial vehicle routing inspection communication channel estimation method comprises the following steps of: setting an unmanned aerial vehicle wireless channel pilot frequency; estimating a channel impulse response at a pilot frequency; and according to the channel impulse response at the pilot frequency, acquiring the impulse response of the whole channel of unmanned aerial vehicle routing inspection communication. The pilot frequency adopts comb-shaped pilot frequency and at least comprises three columns, wherein the middle column carries pilot frequency information, and the rest front and rear columns are all zero. The step of estimating the channel impulse response at the pilot frequency comprises the following substeps of: acquiring the channel impulse response at the pilot frequency by using an LS channel estimation algorithm, and taking the channel impulse response as a Kalman filtering initial value; taking the response obtained in the previous step as the Kalman filtering initial value, carrying out iteration by using Kalman filtering, and recording the obtained channel impulse response; and optimizing a Kalman filtering result by using frequency domain characteristics and based on SVD decomposition.
一种无人机巡检通信信道估计方法,包括步骤,设置无人机无线信道导频;估计导频处信道冲激响应;根据所述导频处信道冲激响应获得无人机巡检通信整个信道的冲激响应。所述的导频采用梳状导频,至少包括3列,中间列携带导频信息,其余的前、后列为全零。估计导频处信道冲激响应的步骤包括,利用LS信道估计算法得到一个导频处信道冲激响应,作为卡尔曼滤波初值;将上一步所得响应作为卡尔曼滤波初值,利用卡尔曼滤波进行迭代,记录所得到的信道冲激响应;利用频域特性并基于SVD分解对卡尔曼滤波结果进行优化。
Unmanned aerial vehicle, routing inspection communication system and channel estimation method
无人机、巡检通信系统以及信道估计方法
2021-12-31
Patent
Electronic Resource
Chinese
Multifunctional routing inspection unmanned aerial vehicle
European Patent Office | 2021
|European Patent Office | 2022
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