Spatial filtering method based on direction finding equipment
A technology of airspace filtering and direction finding, which is applied in directions such as radio wave direction finders, radio wave direction/deviation determination systems, space transmit diversity, etc. Problems such as the inability of equipment to separate signals, etc., to achieve high timeliness and improve efficiency
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[0040] Each element in the antenna array corresponds to a receiver, which is called a receiving channel. The role of the receiver is to convert the radio frequency signal received by the antenna into intermediate frequency IQ data for processing by the computer. For an N-element array, its corresponding N receivers can provide N channels of IQ data streams; each channel of IQ data streams can be demodulated in real time to obtain voice information or other forms of information. However, in the case where there are multiple signals of the same frequency, each IQ data stream contains information about each signal, forming the same-frequency interference. In the actual radio monitoring work, it is necessary to split the same frequency signal at the signal level, so as to separate and demodulate each signal. A kind of spatial filtering method based on direction finding equipment provided by the present invention adopts the following steps to solve this problem, combining figure ...
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