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分析激励编码系统的工作原理及其对图像信噪比的影响,并以眼部疾病超声诊断为例,采用13位Barker码作为编码激励的发射码型及失配滤波的脉冲压缩方法,结果表明,采用采用编码发射和解码压缩之后的眼科B超图图像探测深度和信噪比大大提高。
The principle of excitation coding system and its influence on signal-to-noise ratio of image are analyzed. Taking ultrasound diagnosis of ocular diseases as an example, a 13-bit Barker code is used as a code excitation emission pattern and a mismatch filter pulse compression method. , The depth of detection and signal-to-noise ratio of the ophthalmic B-scan images after encoding and decoding are greatly improved.