In view of application of medium pulse repetition frequency pulse Doppler ( MPRF PD) radar, a main-lobe clutter suppression filter is designed. 针对中重频PD雷达应用背景,设计了一种主瓣杂波抑制滤波器。
Pulse repetition frequency generator 脉冲重复频率发生器
Method for Doppler centroid estimation of airborne radar with a high pulse repetition frequency 机载高重复频率雷达多普勒中心估计方法
Anti-jamming performance of high pulse repetition frequency tracking radar with random frequency hopping 高重频随机跳频跟踪雷达及其抗干扰性能
The detection probability calculating method about low pulse repetition frequency ( LPRF) PD radar against air vehicle is studied. 提出了低脉冲重复频率(LPRF)PD雷达探测飞行器目标的发现概率计算方法。
The laser parameters, such as average power, pulse width and pulse repetition frequency were changed in order to simulate diversification-of arc beam shaping. 通过改变激光的平均功率、脉冲宽度以及重复频率,模拟等离子弧柱形态变化,得到的激光参数对等离子弧柱形态的影响规律。通过控制弧柱的直径可以提高材料的熔积性能。
For a Doppler radar homing seeker with high pulse repetition frequency, the continuous wave approximation is not only simple, but also has a high calculation accuracy. 对于使用高脉冲重复频率的主动多普勒雷达导引头,连续波近似法不仅计算相对简单,而且可以给出较高的计算精度。
Determination of Antenna Length and Pulse Repetition Frequency in Multiple Azimuth Beam Synthetic Aperture Radar System 方位多波束SAR系统中天线长度和PRF选择分析
The effect of the implantation pulse voltage and pulse repetition frequency on compositions and properties of the modified layers was examined. 并且讨论了注入电压和注入脉冲频率对改性层成分和性能的影响。
SAR with Displaced Phase Centers multibeam in Azimuth ( DPCA) can solve the confliction between swath width and resolution, but this mode is one Pulse Repetition Frequency ( PRF) restriction. 方位向多相位中心多波束(DPCA)SAR可以解决测绘带宽和分辨率之间的矛盾,但严格限制了对脉冲重复频率(PRF)的选择。
The technique of multiple phase centers ( MPC) and multiple azimuth beam ( MAB) can be used to resolve the contradiction between azimuth resolution and pulse repetition frequency ( PRF) in spaceborne SAR system. 运用多相位中心多方位波束(MPCMAB)技术能够有效解决条带模式的常规星载SAR系统中方位向分辨率与脉冲重复频率之间的矛盾。
As users increase and the bandwidth to pulse repetition frequency ( PRF) decreases in UWB-MA communication, multiple-access interference ( MAI) is expected to adversely affect system capacity and performance. 在超宽带(UWB)通信系统里,当用户数增加和脉冲重复频率下降时,多址干扰会严重影响系统容量和性能。
To resolve the ambiguities, a multiple pulse repetition frequency system is used in the radar, and several methods for resolving the ambiguities are adopted in this system. 为了解决模糊问题,在体制上雷达一般采用多重PRT(脉冲重复周期)工作方式,采用这种体制的雷达在信号处理上,又有多种解模糊算法。
Some methods for determining the pulse repetition frequency fo a laser rangefinder have been discussed in this paper. Using these methods, we could correctly select the PRF of an air-air, or an air-ground, or a ground-air laser rangefinder. 本文提出了一些确定激光测距机重复频率的方法,用它们可以正确选取空-空、空-地和地-空等激光测距机的重复频率。
110 kHz High Pulse Repetition Frequency Multibeam Klystron Transmitter 110kHz高重频多注速调管发射机
This dissertation discusses the engineering-realizable dimension-reduced STAP technique under home present conditions for AEW radars working in 14 band and medium pulse repetition frequency ( MPRF) mode. Its emphasis is placed on the reduction of the number of spatial channels in STAP. 本文主要针对工作于L频段、中脉冲重复频率(MPRF)模式下的AEW雷达,研究在国内目前条件下可工程实现的降维STAP方法,重点在于降低STAP的空域维通道数。
This paper studies the design of pulse repetition frequency of an X-band height-finding radar for clutter suppression and presents an algorithm for fuzzy distance solution. 本文首先从杂波抑制着手,研究X波段测高雷达脉冲重复频率的设计,在此基础上设计一种解距离模糊的展开算法。
This paper analyses the typical track of the missile when attacking a ship target and presents the relations between the resolution, imaging area, pulse repetition frequency and the flight parameters of the missile. 本文首先分析了空对舰导弹攻击目标的典型轨迹,给出了分辨率、成象区域、脉冲重复频率及成象时间与导弹飞行参数之间的关系;
UWB signal can be modulated when the pulse repetition frequency is 310 MHz. The proposed circuit has proven to be robust and repeatable. 通过对实际电路的测试,得出当UWB脉冲重复速率为310MHz时,可以实现载波对UWB信号稳定、高效的调制,结果证明此电路是一种非常有效的调制电路。
Based on the experiment of the interference of existing UWB signal to the GPS receiver, the potential interference of the UWB pulses with different pulse repetition frequency to the GPS is analysed. 结合已有的超宽带(UWB)信号对全球定位系统(GPS)接收机的干扰实验,分析了不同脉冲重复频率(PRF)的超宽带脉冲信号对全球定位系统的潜在干扰。
Because usually its azimuth's bandwidth is much larger than the pulse repetition frequency ( PRF), these will cause serious azimuth spectral aliasing phenomenon. 但是如何处理它的数据却是一大难题,原因在于它总的方位向带宽通常远远大于方位向采样率(PRF),这样会产生严重的方位向频谱混叠效应。
The signal-to-noise ratios and thier relations to pulse repetition frequency for both systems are calculated with typical modulating signal and the results are compared with PCM system. 通过典型调制信号计算了信噪比及这个比值与脉冲重复频率的关系,并将所得结果与脉码调制作了比较;
Calculation method of critical radar cross section of low pulse repetition frequency PD radar 低重频PD雷达的临界散射截面计算方法
The influences of various buffer gases ( neon, helium, argon and nitrogen) and pulse repetition frequency on the output power at 627.8 nm have been, studied experimentally. 研究了各种缓冲气体(氖、氦、氩、氮)及脉冲重复频率对627.8nm谱线输出功率的影响。
Blind speed phenomenon due to Doppler frequency usually exists in moving target indication radar. This disadvantage affect is avoided through staggered pulse repetition frequency method. 动目标显示雷达中通常存在多普勒频率所引起的盲速现象,常采用参差脉冲重复频率的方法来克服这种不利影响。
This paper presents a method extracting target acceleration by using discrete Wigner-Ville distribution under low pulse repetition frequency ( PRF) and a finite number of samples, velocity information ( Doppler frequency) of target can be obtained simultaneously by using the time-frequency analysis method. 提出了一种在低脉冲重复频率(PRF)和对目标采样数有限情况下提取加速度信息的方法。用这种离散时频分析方法同时也能获得目标的速度信息(多普勒频率)。
And the changing rule of etching amount and surface roughness with the laser energy density, pulse number, pulse repetition frequency were studied. 研究了刻蚀量和表面粗糙度随激光的能量密度、脉冲数、脉冲重复频率的变化规律,确定出最佳的工艺参数。
Subsequently, the various factors that distribute to the impact of the power spectral density are analyzed, and the conclusion is that distribution of power spectral density can be controlled by adjust the sequence characteristics, pulse repetition frequency and pulse energy spectral density. 随后分析超宽带信号频域分布的影响因素,得到的结论是:对功率谱分布的控制可以通过对已调序列特性、脉冲重复频率和发射脉冲能量谱密度的设计得到实现。
This dissertation studies the ground clutter suppression of ABSR. Because low pulse repetition frequency ( LPRF) and low side-lobe antenna are adopted, we focus on main-lobe clutter suppression. 本文主要研究机载战场侦察雷达的地杂波抑制,由于采用了低脉冲重复频率和低副瓣天线,我们主要考虑主杂波的抑制。
TEA CO2 laser with pulse repetition frequency style can realize high average power, high repetition frequency. And it has great value in industry, national defense, scientific research and so on. TEACO2激光器采用脉冲重复频率工作制式,可同时兼有高平均功率、高重复频率和高峰值功率,在工业、国防和科研等领域具有重要的应用价值。