1) Polarity of chirp rate jittered
调频率极性捷变
1.
To suppress the terrain scattered jamming for SAR,a method by random initial phase and Polarity of chirp rate jittered of the transmitted LFM pulses is proposed.
针对合成孔径雷达(SAR)难以抑制场景散射欺骗干扰的问题,提出了将发射信号的随机初相和调频率极性捷变技术相结合的方法,使得干扰信号无法充分获得SAR处理器在距离向和方位向的压缩增益,提高了处理前后的信干比。
2) jittering chirp rate polarity
调频斜率极性捷变
3) frequency agility
频率捷变
1.
A study of angular glint suppression based on frequency agility for monopulse radar;
基于频率捷变的单脉冲雷达角闪烁抑制方法
2.
Target multipath DOA estimation algorithm based on frequency agility for phased array radar;
频率捷变的相控阵雷达目标多径DOA估计算法
3.
A study on work-while-calibrate technology of signal source of frequency agility radar;
频率捷变雷达信号源边工作边校准技术研究
4) frequency agile
频率捷变
1.
A new high range frequency agile radio fuse scheme is proposed,and the ideal of software radio is adopted in design,which make fuse possess the ability of software programmable and enhance the ability of anti-jamming.
分析了现代战争对无线电引信炸高提出的新要求,提出了一种采用频率捷变体制的大炸高无线电引信的设计方案,采用了软件无线电的设计思想,使引信具有软件可编程能力,提高了引信对战场环境的适应能力和抗干扰能力。
2.
According to the characteristic of the frequency agile signal, the BW of intermediate frequency, scanning step width of frequency and time of capture are analyzed when the frequency agile signal is processed in several reconnaissance systems.
根据频率捷变信号的特点,分析了几种侦察体制下接收频率捷变信号需要的中频带宽、扫描步进频宽和截获时间,给出了对频率捷变信号侦察的可行性方案。
3.
A new high range frequency agile radio fuze scheme is proposed, and the ideals of software radio is also adopted in design, which make fuze possess the ability of software programmable and enhance the ability of anti-jamming.
分析了现代战争对无线电引信炸高提出的新要求,提出了一种采用频率捷变体制的大炸高无线电引信的设计方案,采用了软件无线电的设计思想,使引信具有软件可编程能力,提高了引信对战场环境的适应能力和抗干扰能力。
5) frequency-agility
频率捷变
1.
The voltage preset circuit is introduced to control the voltage of VCO,in this way,the time of frequencyagility can be reduced,and the requirement of low spurious,low phase noise,and fast frequency-agility is achieved.
设计了一种L频段频率合成器,该频率合成器采用大规模锁相集成芯片PE3236构成锁相环电路,外加电压预置电路对VCO控制电压进行快速预置,大大缩短了频率捷变时间,并运用相噪最优理论设计环路参数,实现了低杂散、低相噪、快速频率捷变的性能要求。
6) fast hopping frequency synthesizer
捷变频频率源
1.
Key technique of an L band fast hopping frequency synthesizer;
L波段捷变频频率源关键技术研究
补充资料:调频-调频遥测系统
采用调频-调频二重调制方式的频分制遥测系统,简称FM-FM遥测系统,属于模拟式遥测系统。FM-FM遥测系统的抗干扰能力强,遥测精度也比较容易得到保证。模拟式遥测系统大都采用这一类系统。下图为 FM-FM遥测系统的框图。各路被测量经变换器变换成电压信号后去控制各路副载波振荡器。副载波振荡器一般采用压控振荡器(即电压控制的振荡器),其振荡频率正比于控制电压,这样就实现了第一次调频。为了防止路际干扰,各路已调副载波先通过低通滤波器,滤去高次谐波,再送到相加放大器形成多路信号,并通过信道调制器对载波调频,这样就实现了第二次调频。已调频的载波由发射天线发送出去。接收端收到遥测信号后先通过解调器解调出多路信号,再送往各分路的带通滤波器,即分路滤波器,把各路已调副载波分离开来。分离出来的已调副载波送到相应的分路解调器,进行第二次解调,就可以得到所传送的模拟信号。美国对 FM-FM遥测系统已经实现了标准化、模块化、系列化。广泛应用模拟集成电路制成标准部件,提高了系统的可靠性和适应性。
说明:补充资料仅用于学习参考,请勿用于其它任何用途。
参考词条