Coherent processing method and processing device for dual-band radar
A processing method and dual-band technology, which can be used in measurement devices, radio wave reflection/re-radiation, radio wave measurement systems, etc. Signal-to-noise ratio, improve radar performance, and solve the effect of large amount of calculation
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Embodiment 1
[0050] See figure 1 , figure 1 A schematic flowchart of a coherent processing method for a dual-band radar provided by an embodiment of the present invention. The coherent processing method includes the steps:
[0051]S1. Obtain the dual-band collaborative agile waveform baseband signal of each pulse when the dual-band system is combined with the agile waveform, wherein the minimum frequency hopping interval of the first frequency band is the same as the minimum frequency hopping interval of the second frequency band, and the first frequency band is the same as the minimum frequency hopping interval of the second frequency band. The frequency hopping codeword of the frequency band is the same as the frequency hopping codeword of the second frequency band. Specifically include steps:
[0052] S11. Obtain the dual-band emission pulse of each pulse when the dual-band system is combined with the agile waveform.
[0053] Specifically, the dual-band radar in this embodiment adop...
Embodiment 2
[0112] On the basis of the first embodiment, this embodiment evaluates the processing result of the above-mentioned coherent processing method.
[0113] Specifically, the evaluation items include main sidelobe ratio, ranging error and velocity error. in,
[0114] Main side lobe ratio: main lobe ratio = main lobe amplitude - first side lobe amplitude, the unit is dB.
[0115] Ranging error: .
[0116] Speed measurement error: .
[0117] 1. Simulation conditions
[0118] Assuming that in the radar observation scene, an ideal point target moves in a straight line at a uniform speed in the radial direction, the radar transmission waveform is formed according to the dual-band agile waveform. The specific waveform and scene parameters are shown in Table 1.
[0119]
[0120] The waveform in the radar observation scene and the specific observation parameters of the target are given in Table 1. The radar transmit waveform adopts a linear frequency modulation signal. It can...
Embodiment 3
[0126] On the basis of Example 1, please refer to Figure 11 , Figure 11 This is a schematic structural diagram of a coherent processing device for a dual-band radar provided by an embodiment of the present invention, where the coherent processing device includes a baseband signal acquisition module, a pulse compression processing module, a pulse signal fusion module, and a target parameter calculation module.
[0127] Specifically, the baseband signal acquisition module is used to acquire the dual-band cooperative agile waveform baseband signal of each pulse when the dual-band system is combined with the agile waveform, wherein the minimum frequency hopping interval of the first frequency band and the minimum frequency hopping of the second frequency band are The interval is the same, and the frequency hopping codeword of the first frequency band is the same as the frequency hopping codeword of the second frequency band. The pulse compression processing module is connected ...
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