spacial frequency meaning in English

空间频率

At first some modification is made in conventional beam forming of frequency domain , namely to estimate doa by arrays outputs on compensated spacial frequency points of echoes . then the cwt is utilized to signal processing in space - frequency domain for estimation of doa , and the corresponding modification is also made . in the dissertation , the computer simulations of doa estimation for both narrow - band and wide - band echoes are given , so do the necessary comparison among several methods and crb
首先在传统的频域波束形成算法的基础上，提出对宽带信号的频率补偿，也即对宽带回波信号的各空间频率根据时间频率的差异进行相应补偿，然后对各阵元输出求和来得到方位估计；其次将连续小波变换引入到空间?频率处理中，从而完成对目标方位的估计，并进行了相应地补偿。