The characteristics of the 2 dimensional echogram, the color Doppler energy imaging and pulsed 2 wave Doppler ultrasound spectrum were studied.
观察分析其二维声像图、彩色能量图及脉冲多普勒频谱特征。
Applying the theory of multi dimensional digital signal processing, this paper analyses the 2-dimensional interleaving structure of luminance and chrominance spectrum for the PAL signal.
运用多维数字信号处理理论，分析了PAL信号亮度和色度频谱的二维交错结构。
The current analysis focuses on the performance of BPSK modulation on 2-dimensional spread spectrum system with single-tone jamming.
针对二进制相移键控调制的二维扩频系统，分析了其抗单音干扰的性能。
应用推荐