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为了显示现代雷达、超声检查、声纳的图象，比较了由极坐标到直角坐标的数字扫描变换器（ＤＳＣ）的各种实现方案。提出了一种单元增量计数法实现的高速数字扫描变换方案，并讨论了用新方案消除ｍｏｉｒé赝象的弥补算法及一种结合ＤＳＣ结构的漫游开窗算法。该方案可以集成于一片现场可编程门阵列（ＦＰＧＡ）中，并已应用于多种雷达数字显示系统。结果证明应用该方案可以达到５０ＭＨｚ的点变换速度，并同时完成弥补漏点和放大漫游窗口。
To show modern radar, sonography, and sonar images, various implementations of digital scan converters (PoCs) from polar to Cartesian coordinates are compared. A high-speed digital scanning transformation scheme based on incremental unit counting method was proposed. The algorithm to eliminate moiré artifacts with new scheme and a roaming windowing algorithm combined with DSC structure were discussed. The solution can be integrated in a field-programmable gate array (FPGA) and has been used in a variety of radar digital display systems. The results show that the program can be used to achieve 50MHz point transform rate, and at the same time to make up missed leaks and enlarge roaming window.