Broadband waveform generation and channel equalization method and system
A wideband waveform and channel equalization technology, applied in the field of digital signals, can solve problems such as large output signal amplitude and phase errors, deterioration of wideband signal amplitude and phase errors, and affecting the overall performance of the radar.
Pending Publication Date: 2022-04-08
BEIJING INST OF RADIO MEASUREMENT
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Problems solved by technology
[0002] At present, broadband waveform generation is widely used in modern radar systems, but due to the nonlinearity of the DAC chip and the influence of SINC function modulation in the waveform generation link, the amplitude and phase errors of the output signal are relatively large. In addition, the signal generation Links often need to connect analog devices such as amplifiers, filters, mixers, and frequency multipliers. These analog devices will inevitably deteriorate the amplitude and phase errors of broadband signals, that is, channel mismatch, which will seriously affect the overall performance of the radar. , so in the actual application process, there are often strict requirements on the generation of broadband waveforms to ensure the consistency of the output signal amplitude and phase
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[0030] In order to illustrate the present invention more clearly, the present invention will be further described below in conjunction with the embodiments and accompanying drawings. Similar parts in the figures are denoted by the same reference numerals. Those skilled in the art should understand that the content specifically described below is illustrative rather than restrictive, and should not limit the protection scope of the present invention.
[0031] An embodiment of the present invention proposes a broadband waveform generation and channel equalization method, such as figure 1 shown, including:
[0032] S101: the control component controls the broadband waveform generating component to be equalized to generate a broadband waveform signal and calculate its equalization coefficient through MATLAB;
[0033] S102: The control component sends the equalization coefficient as an initial condition to the broadband waveform generation component to be equalized for equalizati...
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The embodiment of the invention discloses a broadband waveform generation and channel equalization method and system. The method comprises the steps that a control assembly controls a to-be-equalized broadband waveform generation assembly to generate a broadband waveform signal and calculates the equalization coefficient of the broadband waveform signal through MATLAB; the control assembly takes the equalization coefficient as an initial condition and issues the equalization coefficient to the to-be-equalized broadband waveform generation assembly for equalization compensation; analyzing a pulse pressure index of a broadband waveform signal generated by a to-be-balanced broadband waveform generation component or a cascade subsequent component through the MATLAB, completing balance coefficient calculation through the MATLAB, determining whether the pulse pressure index meets a preset index or not, if yes, ending balance compensation, and if not, continuing balance compensation. The preset indexes are met.
Description
technical field [0001] The invention relates to the field of digital signals. More specifically, it relates to a broadband waveform generation and channel equalization system. Background technique [0002] At present, broadband waveform generation is widely used in modern radar systems, but due to the nonlinearity of the DAC chip and the influence of SINC function modulation in the waveform generation link, the amplitude and phase errors of the output signal are relatively large. In addition, the signal generation Links often need to connect analog devices such as amplifiers, filters, mixers, and frequency multipliers. These analog devices will inevitably deteriorate the amplitude and phase errors of broadband signals, that is, channel mismatch, which will seriously affect the overall performance of the radar. , so in the actual application process, there are often strict requirements on the generation of broadband waveforms to ensure the consistency of the output signal am...
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IPC IPC(8): G06F1/02
Inventor 韩斐史康为张建恩陈建曾宏川
Owner BEIJING INST OF RADIO MEASUREMENT