research with the foreign target transient response development, calculation method of laser narrow pulse transient response is put forward. Based on laser narrow pulse transient response theory, it is simulated by us...
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ISBN:
(纸本)9781467317993
research with the foreign target transient response development, calculation method of laser narrow pulse transient response is put forward. Based on laser narrow pulse transient response theory, it is simulated by using mathematical model to get the transient responses of several typical ground and low-altitude targets after analyzing, data analysis indicates that this feature can be directly used for target classification, having large differences in shape and size, confirmed the feasibility of this method can provide data support and technical support for further identification of the target classification.
For the difficulty and low efficiency in calculating the radio fuze echo of complex target with traditional method, the PO-MOM Hybrid computation methodology is introduced to the traditional radio near-field fuze echo...
详细信息
ISBN:
(纸本)9781467317993
For the difficulty and low efficiency in calculating the radio fuze echo of complex target with traditional method, the PO-MOM Hybrid computation methodology is introduced to the traditional radio near-field fuze echo computing model. The established model can approximately calculate and quickly access target near-field equivalent rCS with the PO-MOM hybrid algorithm. When combined with the radar equation, the engineering CEM model of target terminal ballistics radio fuze echo signal can be achieved. The result of model validation shows that: the model has a high calculating speed, and the error is less than 25%, so this model can be used in quick simulation of radio fuze echo signal.
For the absence of laser polarization characteristics data, which can be used to distinguish between mist and painted metal target, then we have taken a test methods based on rotation angle of polarization of the inci...
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ISBN:
(纸本)9781467317993
For the absence of laser polarization characteristics data, which can be used to distinguish between mist and painted metal target, then we have taken a test methods based on rotation angle of polarization of the incident laser, and measured the degree of linear polarization of thin mist and tanker samples, experimental result says: within the scope of the polarization angle of 45°, laser backscattering polarization characteristics have the ability to distinguish between mist and painted metal target samples. In order to verify this phenomenon, we changed frequency and pulse width parameters of the incident laser, then measured middle and high concentrations mist and painted armored vehicle samples. The verification results show that: underdifferent frequency and pulse width of incident laser, with increasing the angle of incident laser polarization, the degree of laser backscattering polarization of mist decrease first and then increase, the minimum value of polarization show in 45°. But the degree of polarization of painted metal target samples do not change significantly, which are greater than middle and high concentration mist in the angle of 45°.
A algorithm of fuze terminal trajectory doppler echo signal is established based on the near-field electromagnetic scattering model and fuze echo model, which can calculating electromagnetic scattering characteristics...
详细信息
ISBN:
(纸本)9781467317993
A algorithm of fuze terminal trajectory doppler echo signal is established based on the near-field electromagnetic scattering model and fuze echo model, which can calculating electromagnetic scattering characteristics of CAd model, and the fuze doppler echo signal. Considering the questions of the shelter of the target and local irradiation, the algorithm mainly uses physical optics method (PO) and equivalent edge currents (EEC). Comparing with the measureddata, the analysis shows that the example results using the algorithm mentioned above are, very consistent. The algorithm is reliable, and could provide the basis and approaches for proximity fuze design because of practicality and versatility.
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