CAJ | 학술논문

针对掠海飞行器系统仿真的需要，研究了海浪仿真方法。选取P—M谱作为海浪谱，通过海况确定波谱参数，在波谱仿真带宽内采用频率等分法对其进行分割，根据Longuest—Higgins海浪模拟模型进行仿真，得出了海浪时域波形。并采用Welch法进行波谱估计，从波谱能量度量，仿真精确度达到了99．22％。
침대략해비행기계통방진적수요，연구료해랑방진방법。선취P—M보작위해랑보，통과해황학정파보삼수，재파보방진대관내채용빈솔등분법대기진행분할，근거Longuest—Higgins해랑모의모형진행방진，득출료해랑시역파형。병채용Welch법진행파보고계，종파보능량도량，방진정학도체도료99．22％。
This paper deals with the method of simulating sea wave for simulation of close-to-sea flighting system. Firstly, the P-M spec- trum is selected as the power spectrum of sea wave to be simulated, and based on the table of sea condition deterraing the parameters of wave spectrum, the selected power spectrum is parted on a prescription composed of drugs of equal amount frequency. Finally the simulated sea wave with time are determined on the basis of Longuest-Higgins model. The simulation accuracy arrives at 99.22~ is drawn by the spectral analyzing of he simulated sea wave in Welch. Without loss o~ generality, this method is practical and important in engineering.