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- MMW high resolution radar range profile two-step stretch processing method direct digital synthesis （DDS）. 标 签 毫米波高分辨雷达 距离像 双脉冲伸缩处理 直接数字合成(DDS).
- Use of "look, listen and smell" three pointers, the villas omni directional patrols. 运用“看、听、闻”三要领，对公寓进行全方位巡逻。
- A virtual instrument based integrated measurement system for Doppler navigation radar is developed. Using direct digital synthesis(DDS)technique,a kind of radar Doppler frequency simulator is introduced. 分析了机载四波束多普勒测速雷达的工作原理,采用直接数字频率合成(DDS)技术进行多普勒频移模拟器的设计,通过数字控制,该模拟器可以产生高分辨率的多普勒频率信号；
- Direct digital synthesis is a new signal synthesis technique developed very fast in recent years. introduce the principle of DDS, disscus the application and development trend of DDS in Moden Radar and ECM superficially. 直接数字合成技术是近年来迅速发展起来的一种新型的信号合成技术,介绍了DDS的原理,对其在现代新体制雷达和电子对抗领域中的应用及其发展前景进行了初步讨论。
- It not only provides the learners as well as consumers with service which is omni directional,all-leveled,professional,individuated and humanized,but also optimizes and perfects itself. 构建“教育超市”是建立现代学校制度的必然选择,是提升教育行业服务水平的必然要求。
- This paper introduces a DDC(Direct Digital Control) temperature system. 介绍一种 DDC(直接数字控制 )温度系统。
- Two dimensional image was obtained by transesophageal echocardiography.The thickness,wave time and velocity were showed during atrial septal motion by omni directional M mode echocardiography (OME). 应用经食管超声心动图获得二维图像,全方向M型超声显示并测量房间隔运动时的厚度、波幅时间及速度。
- Objective: To evaluate the value of direct digital panoramic sialography. 摘要目的：评价直接数字曲面体层摄影在涎腺造影中的临床价值。
- Objective:To evaluate the value of direct digital panoramic sialogra phy. 目的评价直接数字曲面体层摄影在涎腺造影中的临床价值。
- Low Frequency Omni Directional Radio Range 低频全向无线电信标
- Low Power VHF Omni Directional Range 低功率甚高频全向无线电信标
- A new method LFM in direct digital frequency synthesizing ( DDS) based on CORDIC algorithm is introduced in this paper. 本文介绍了一种应用CORDIC算法的线性调频直接数字合成(DDS)的实现方法。
- omni directional longer/shorter leg iron tower 全方位长短腿铁塔
- programmable digital radar echo simulator 可编程数字式雷达回流模拟器
- Objective To research the application value of direct digital radiograph (DDR) in nasal bone imaging. 目的探讨直接数字化X线摄影(direct digitized radiography,DDR)在鼻骨摄影中的应用价值。
- This paper discusses the direct digital control (DDC) in the air-handing unit of air-conditioning system. 本文将讨论空调系统中空气处理机组的直接数字控制(DDC)设计。
- Digital Radar Land Mass Simulator 数字雷达地物模拟器
- Direct Digital Frequency Synthesis(DDS) technique is introduced and its spurious error is mainly studied. 介绍了直接数字频率合成技术以及分析其杂散误差,对相位截断误差和幅度量化误差进行了傅立叶级数分析研究。
- Programmable Digital Radar Land Mass Simulation 程控数字雷达大陆块模拟
- A Quadrature Direct Digital Frequency Synthesizer (QDDS) based on CORDIC algorithm is presented. 设计了一种基于CORDIC算法的正交输出直接数学频率合成器(QDDS);并在ALTERA FLEX10K 系列FPGA上予以实现.
