Characteristics of Angular Domain Backscatter Distribution in Complex Ground Background
In order to solve the problem of insufficient simulation accuracy caused by the large scattering angle of the incident angle in the irradiation area when using the average backscattering coefficient to simulation the echo of enemy air blast millimeter wave fuzes,the far-field conditions for testing the backscattering characteris-tics of complex ground backgrounds were discussed,and the far-field condition expression for millimeter wave near-field tasting of complex ground backgrounds were modified.Then,a complex ground background angle do-main backscatter distribution model for ground fuze detection was proposed.Based on the measured data,the optimized backscattering field in the soil cultivated land,cement land and so on were constructed,and its influ-ence on the response echo of fuze detection was analyzed.The simulation results showed that the proposed mod-el had high consistency with the traditional Ulaby model in the case of near vertical incidence.The backscatter coefficient was 2～4 dB lower than that of the Ulaby model under near horizontal incidence conditions.The sim-ulation accuracy of millimeter wave fuze detection was improved by using the fuze echo algorithm of this model,which could provide data support for the design of millimeter wave fuze detector for ground-to-air explosion.
backscattering of groundground-to-air explosion fuzeangular domain backscatter coefficientscattering distribution functionsimulation
NETL
NSTL
万方数据
