A multi-satellite constrained robust space-frequency anti-jamming processing method and device
A processing method and space-frequency technology, applied in the field of communication, can solve the problems such as the deterioration of the output signal-to-interference-noise ratio, and achieve the effects of enhancing robustness, suppressing broadband interference, and simplifying the amount of engineering calculations.
Active Publication Date: 2019-05-17
UNICORE COMM INC
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[0004] In order to solve the above technical problems, the present invention provides a multi-satellite constrained robust space-frequency anti-jamming processing method and device, which can solve the problem of deterioration of the output signal-to-interference-noise ratio caused by the mismatch of the steering vector of the desired signal, etc., and enhance the algorithm robustness
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[0040] In order to make the purpose, technical solution and advantages of the present invention more clear, the embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings. It should be noted that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined arbitrarily with each other.
[0041] The steps shown in the flowcharts of the figures may be performed in a computer system, such as a set of computer-executable instructions. Also, although a logical order is shown in the flowcharts, in some cases the steps shown or described may be performed in an order different from that shown or described herein.
[0042] Such as figure 1 As shown, the multi-satellite constrained robust space-frequency anti-jamming processing method in the embodiment of the present invention includes the following steps:
[0043] Step 101, converting the received time-domain signal...
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The invention discloses a multi-star constraint steady space-frequency anti-interference processing method and device. The method comprises the following steps: converting a received time-domain signal into frequency-domain data by Fourier transform; calculating a covariance matrix of frequency points in a signal bandwidth according to the frequency-domain data and determining a covariance matrix correction factor, and calculating a weight vector based on the covariance matrix correction factor; filtering the frequency-domain data by using the weight vector; and subjecting the filtered frequency-domain data to inverse Fourier transform in order to converting the filtered frequency-domain data into time-domain data to be output. The method can effectively suppress the broadband interference when signal data of multiple satellites is mismatched by calculating the weight vector with the covariance matrix correction factor, so as to improve the robustness of the space-frequency filtering algorithm. Further, the method clears out-of-band signals and accordingly simplifies the amount of engineering calculation under the premise of ensuring a filtering effect.
Description
technical field [0001] The invention relates to the communication field, in particular to a multi-satellite constrained robust space-frequency anti-jamming processing method and device. Background technique [0002] In order to suppress strong interference in a complex electromagnetic environment, array antenna beamforming technology is widely used in spread spectrum communication systems. However, the adaptive beamforming technique is very sensitive to the mismatch of the steering vector of the desired signal. Because of this mismatch, the array beamformer will suppress the desired signal to a certain extent, so it is called signal self-cancellation. [0003] Traditional beamforming algorithms cannot improve the effects of unknown sensor mutual coupling, near-field wavefront distortion, source expansion, and coherent and incoherent local scattering. Therefore, robust beamforming technology has increasingly become the focus and focus of beamforming research. Contents of th...
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IPC IPC(8): G01S19/21
CPCG01S19/21
Inventor 任超郑永翔
Owner UNICORE COMM INC