超宽带雷达信号产生器的设计

一种超宽带等效采样接收机的设计与实现吴兵;夏浩淼;李武建【摘要】脉冲超宽带雷达回波信号由于带宽大而难以直接采样,通常采用等效时间采样方法来进行模数转换.传统的等效采样接收机大都是基于改变ADC采样时钟的时延来实现等效采样,采样时钟对触发信号会产生亚稳态时序,不可避免地会出现数据误对齐,必须添加辅助的在线或离线校正设计.针对这一问题,设计了一种基于FPGA内置延迟线的超宽带等效采样接收机,FPGA产生延时可调的发射触发信号去控制波形产生系统,基于高速采样保持器和ADC完成回波接收,实现了超宽带射频信号的等效采样,而无数据误对齐问题.接收机的等效采样速率为12.8 GS/s,-3 dB 采样带宽为6.4 GHz,满足脉冲超宽带雷达的应用需求.%It is hard to directly sample the ultra-wideband radar echoes due to its large bandwidth.The equivalent time sampling method is often used to carry out analog to digital conversion (ADC).Traditional equivalent sampling receivers are mostly based on changing the delay of ADC sampling clock to realize equivalent sampling.Due to the metastable state between sampling clock and trigger signal,the received da-ta is misaligned inevitably and the correction algorithm online or offline must be added.To solve this prob-lem,an ultra-wideband equivalent sampling receiver based on internal delay line of FPGA is designed.Based on the received echoes of high speed sample-and-hold and ADC,the equivalent sampling of ultra-wideband RF signal is realized without data misaligning when using the delay-tunable transmitting signal generating by FPGA to control the waveform generating system.The equivalent sampling rate is 12.8 GS/s and - 3 dBsampling bandwidth is 6.4 GHz,meeting the application requirements of UWB radar.【期刊名称】《雷达科学与技术》【年(卷),期】2017(015)004【总页数】6页(P443-448)【关键词】等效采样;数字延迟线;数字接收机;采样保持器【作者】吴兵;夏浩淼;李武建【作者单位】中国电子科技集团公司第三十八研究所,安徽合肥 230088;中国电子科技集团公司第三十八研究所,安徽合肥 230088;中国电子科技集团公司第三十八研究所,安徽合肥 230088【正文语种】中文【中图分类】TN9570 引言脉冲超宽带雷达有着固有的高距离分辨率及良好的穿透特性，可实现对非金属障碍物后面隐藏目标的探测和定位，在军事、反恐、安检、救灾和医疗等领域有着重大的应用前景[1-2]。

一种超宽带雷达信号模拟器的设计占超;蔡新举;刘双青【摘要】为满足雷达装备不断增长的保障需求，研制了一套便携式雷达装备检测系统，该检测系统的核心组成部分是超宽带雷达信号模拟器。

模拟器采用低频段基带信号与高频段本振信号2次混频来模拟产生0.05~16 GHz范围内多种体制的雷达信号，最后完成了电路实现，经过信号测试各项指标均达到设计要求。

%In order to meet the needs of a certain type of radar equipment increased security requirements, a set of portable radar equipment detection system was developed, the ultra wideband radar signal simulator was the core of the detection system. The baseband signal of low frequency was mixed with the vibration signal of high frequency band twice to generate many kinds of radar signal simulation system in the range of 0.05~16GHz in the simulator. Finally, the circuit implementa⁃tion was completed. After signal test, the indicators of radar signal simulator reached the design requirements.【期刊名称】《海军航空工程学院学报》【年(卷),期】2015(000)002【总页数】5页(P116-119,124)【关键词】信号模拟器;直接数字频率合成;现场可编程门阵列【作者】占超;蔡新举;刘双青【作者单位】海军航空工程学院电子信息工程系，山东烟台264001; 92515部队，辽宁葫芦岛125001;海军航空工程学院电子信息工程系，山东烟台264001;91341部队，辽宁东港118300【正文语种】中文【中图分类】TN955传统的维护保障体制已不能满足目前雷达装备的作战保障需求，为了解决装备维护与出勤率之间的矛盾，开发研制了一套便携式雷达装备检测设备，而雷达信号模拟器是整套检测系统的关键设备。

一种新型数字超宽带梳状谱信号发生器的研制刘宇军;尹洪雁;刘扬;许真真【摘要】The principle and application limitations of classical comb spectrum signal generator is analyzed, and a novel digital ultra-wideband comb spectrum signal generator is developed.This generator is implemented by a dig-ital circuit, and has good performance in circuit structure, signal stability and circuit portability.This generator produce a stable comb spectrum signal,which is a breakthrough and innovation compared to the traditional comb spectrum signal generator.%分析了经典梳状谱信号发生器的原理及应用局限，研制出了一种新型数字超宽带梳状谱信号发生器。

该方案采用数字电路方法实现，电路设计独特，信号稳定性好，同时具有较好的电路移植性，是传统梳状谱信号发生器的创新和突破。

设计出的新型数字超宽带梳状谱信号发生器能够产生稳定的梳状谱信号。

【期刊名称】《科学技术与工程》【年(卷),期】2016(000)005【总页数】4页(P161-164)【关键词】梳状谱;信号发生器;数字电路;电路移植性【作者】刘宇军;尹洪雁;刘扬;许真真【作者单位】北京出入境检验检疫局检验检疫技术中心，北京100026;北京出入境检验检疫局检验检疫技术中心，北京100026;北京出入境检验检疫局检验检疫技术中心，北京100026;北京出入境检验检疫局检验检疫技术中心，北京100026【正文语种】中文【中图分类】TN98梳状谱信号发生器在现代微波系统中的应用十分广泛，通过其倍频作用可以做成毫米波频率源，在仪表设备中也是展宽频带的重要部分，目前广泛应用于微波通信、EMC测试等领域。

一种简易的超宽带纳秒级脉冲发生器设计赵红梅;马琳琳;崔光照【摘要】为了得到超宽带纳秒级窄脉冲信号,在对UWB脉冲产生方法分析总结的基础上,提出了一种基于数字逻辑器件的简单脉冲产生电路.对实际制做的电路进行了测试,能够得到重复频率为10 MHz,脉冲宽度约为4 ns,幅度约为500 mV的窄脉冲.该电路成本低,结构简单,易于制作,工程实用性较强.%In view of the existing methods, a kind of UWB signal generator based on the digital logic device is designed to obtain the ultra-wideband (UWB) nano-seconds narrow pulse signal. Practical circuit has been tested, and narrow pulses, in which the repeat frequency is 10 MHz, pulse width is about 4 ns and amplitude is about 500 mV, have already been obtained at the same time. This circuit has low cost, simple structure and is easy to construct, which, as a result, has strong practicability.【期刊名称】《现代电子技术》【年(卷),期】2012(035)019【总页数】3页(P12-14)【关键词】超宽带;纳秒级窄脉冲;数字逻辑器件;TTL【作者】赵红梅;马琳琳;崔光照【作者单位】郑州轻工业学院电气信息工程学院,河南郑州450002;郑州轻工业学院电气信息工程学院,河南郑州450002;郑州轻工业学院电气信息工程学院,河南郑州450002【正文语种】中文【中图分类】TN784-340 引言近年来，超宽带(Ultra-Wide Band,UWB)无线通信技术成为国内外研究的热点。