In capter 2 , it is proved that the system possesses a global attractor and a two - side estimate for the fractal dimension of it is presented . in capter 3 , several different approximate intertial manifolds of the system are constructed by applying linear galerkin method , method of projecting operator and operator eigenvalue and successive iterative method , and it is proved that arbitary trajectory of the system enters into a small neighbourhood of the global attractor after large time . capter 4 studies the asymptotic attractor of the system by constructing a solution sequence which approaches to the global attractor of the equation in long time , and the dimentional estimate of the asymptotic attractor is given 第二章證明了該系統(tǒng)的整體吸引子的存在性,給出了其分形維數(shù)的上下界;第三章利用線性galerkin方法、算子投射和算子特征值方法及逐次迭代方法構(gòu)造了幾類近似慣性流形,證明了該方程的任意解軌道在長時間后進入整體吸引子的任意小鄰域;第四章構(gòu)造了一個有限維解序列即該系統(tǒng)的漸近吸引子,證明了它在長時間后無限趨于方程的整體吸引子,并給出了漸近吸引子的維數(shù)估計
All of above presents the data to study the algorithm which will be used to detect the targets against the broadened bragg lines . eigenstucture - based algorithms are used to realize bearing resolution on the basis of synthetically comparing several classical algorithms . first sea echo ’ s bearing prior knowledge is utilized to constitute project operator to constraint the noise subspace estimation with the use of constrained music algorithms , which largely increases the resolution and doa estimated accuracy 為檢測海上目標的方位信息,在綜合分析比較各類算法的基礎(chǔ)上,本文采用特征結(jié)構(gòu)類算法來實現(xiàn)空間方位分辨中的constrainedmusic算法,此方法充分利用了海浪的方位先驗信息來構(gòu)造投影算子約束噪聲子空間的估計,大大提高了目標分辨率和估計精度。