探究奇偶旋翼对雷达回波的影响

Exploring the Influence of Odd and Even Rotors on Radar Echoes

针对奇偶旋翼对雷达回波的影响,本文分析验证了奇偶旋翼产生桨叶反射现象的差异。首先分析了桨叶反射现象产生的原理;然后根据奇偶旋翼的物理机理的差异进行分析得出:偶数旋翼转一圈会产生N次桨叶反射现象(N为旋翼个数),而奇数旋翼会产生2N次桨叶反射现象,其中N次强桨叶反射,N次弱桨叶反射,且强弱桨叶反射现象交替出现;最后根据雷达实测数据与旋翼参数进行对比,验证了奇偶旋翼产生桨叶反射现象差异的正确性。

In view of the influence of odd and even rotors on radar echoes,the difference of blade reflection phenomenon generated by odd and even rotors was analyzed and verified.Firstly,the principle of blade reflection was introduced.Then,based on the difference of physical mechanism between odd and even rotors,it was concluded that an even number of rotors will produce N times of blade reflection(N is the number of rotors),while an odd number of rotors will produce 2N times of blade reflection,including N times of strong blade reflection and N times of weak blade reflection.In addition,the strong and the weak blade reflection occurs alternately.Finally,according to the comparison between the radar measured data and rotor parameters,the correctness of the difference in blade reflection between odd and even rotors was verified.