在球不变随机向量(SIRV)非高斯杂波背景下,研究了多脉冲相参雷达目标的自适应检测问题。
In the clutter modeled as spherically invariant random vector (SIRV), the adaptive coherent radar target detection is addressed.
主要研究了动基线时差测量系统采用多脉冲相参积累算法对低信噪比条件下运动目标的有效检测问题。
How to detect moving target in low SNR condition for moving-baselines time difference measuring system is studied, using multi-pulses coherent integration algorithm.
L 297芯片产生脉宽可调的脉冲相序信号,该信号作为双极性桥式功率驱动电路的输入信号,放大后驱动步进电机。
L297 chip generates pulse phase sequence signals of which the pulse width is adjustable. The signals are the input ones of dual bridge driving circuit and drive the stepper motor after amplification.
试验研究了不同微弧氧化电压和脉冲频率对涂层微观形貌,涂层厚度及相组成的影响。
The effects of different oxidation voltage and pulsed frequency on microstructure, thickness and phase constitute of the coatings have been investigated.
提出一种由线性调频与二相码组合而成的新型混合脉冲信号,给出了其数学表达式、处理方法及其模糊函数的表达式。
According to a new type of mixed pulse compression signal, this paper discusses the mathematical expression, the way of processing and the expression of the ambiguity function.
本文介绍了一种可用于火控雷达的单脉冲有限相扫天线系统。
A monopulse limited phase scanning antenna system for the fire-control radar at X-band is presented in this paper.
它是在用二相编码完成脉冲压缩的基础上,利用极化编码实现相关检测。
Phase coding is firstly used for pulse compression, then correlative detection is performed by polarization coding.
该文深入分析研究了高频脉冲交流环节逆变器稳态原理特性与单极性移相控制策略。
The steady principle of the inverter with a high frequency pulse AC link and the unipolarity phase shifting control strategy are investigated.
随机二相码调相PD(脉冲多普勒)引信,是一种较为新颖的噪声调制引信体制。
The random binary phase code phasing PD fuze is a novel modulated system of noise.
本论文讨论了脉冲压缩雷达中两种典型的雷达制式:线性调频雷达和二相编码雷达的干扰。
The jamming of two models of pulse compressed radar, Linear frequency coded radar and bi-phase coded radar, are studied in this dissertation.
脉冲多普勒(PD)雷达是一种先进的全相参体制的雷达。
PD radar is a kind of advanced pulse radar which using coherent processing.
分析了两相多循环脉冲爆震发动机工作过程中爆震室内、外壁换热特性,建立了爆震室壁温分布计算模型。
The heat transfer characteristics of the detonation chambers outer and inner wall were analyzed when the pulse detonation engine model was operated in the multi-cycle mode.
建立了微型脉冲推力器点火启动模型,模型中考虑了两相流动和颗粒对推进剂表面的冲击传热。
Ignition start-up model of impulse micro-thruster is established, considering two phase flow and impact heat transfer of particle on the surface of propellant.
采用双向窄脉冲介质阻挡气液两相放电技术,对大肠杆菌灭活效果进行了试验。
The inactivation of Escherichia coli with bipolar pulsed dielectric barrier discharge in water-air mixture was studied experimentally.
当CP脉冲为低频时,各相绕组平均电压和平均电流较低,电动机磁场储能较少,一定程度上克服了共振现象。
When the frequency of CP pulses is lower, average voltages and currents of windings will decrease and magnetic field energy of motor is very little so as not to produce resonance.
脉冲多普勒雷达是一种先进的全相参体制雷达。
Pulsed Doppler radar (PD radar) is a kind of advanced radar which using coherent processing.
研究了气液混合两相体中线线电极脉冲放电现象。
The pulse discharge phenomena of gas-liquid mixture in wire-wire gap are studied.
当脉冲式鉴相器中的时间常数不能忽略并具有附加简单RC网络时,得到了系统稳定的条件。
The stability condition for the system is obtained when the time constant in the pulse operated phase discriminator can not be neglected and with an additional simple RC network.
本文阐述了极性采样倒相编码数字脉冲压缩处理器的非参量恒虚警率(CFAR)特性。
The nonparametric constant false alarm rate (CFAR) property of digital polarity sampled phase reversal coded pulse compressors is described.
研究了氧流量和脉冲偏压对薄膜相结构、沉积速率、表面形貌、薄膜硬度的影响。
The effects of the flow rate of oxygen and pulse bias voltage on the structure, deposition rate and the surface morphology of thin film were studied.
着重剖析了该控制系统产生触发脉冲列与移相的方案;
The method how the trigger pulse series is generated and shifted is expounded in this paper.
介绍了一种采用单路单脉冲接收机的有限相扫雷达的相控跟踪系统的数字模型。
The mathematical model of the limited phase-sweeping radar using a single circuit monopulse receiver is introduced in the article.
该方法首先对各距离分辨单元在方位向进行非相参积累,然后利用类似单个脉冲下扩展目标的广义似然比检测器来实现高分辨率雷达的检测。
First, each range resolving unit was accumulated non-inherently in azimuth, and then the detection of HRR target was done with the GLRT detector similar to that of the mono-pulse spread targets.
研究了多重化逆变器的一种控制方法,采用逆推的方法确定各单元的触发脉冲,通过多重移相叠加原理得到正弦波输出。
A new control method of multiunit inverter is described, which determines the triggering pulse for each unit to obtain the sine wave output through multiple-phase shifting superimposition principle.
该晶闸管触发器采用集成运数放大器,移相触发脉冲的形成是根据三相交流电的各相与移相控制电压直接比较原理实现的。
The shift trigger pulse of the thyristor trigger circuit with integration amplifier is generated by comparing directly principle of three-phase AC and shift-phase control voltage.
本文阐述了一种用于微波波段的脉冲鉴相器的工作原理、主要参数的选择原则,并对其进行了取样效率的理论分析。
The operating principle and the choice of the main parameters for a new pulse phase detector used in UHF band is described. The sampling efficiency is discussed.
并且讨论了在脉冲多普勒相参体制雷达下目标回波的相位信息以及目标信号的多普勒谱特性。
Then discussing the phase information and Doppler characteristic of target echo wave in the pulse Doppler phase radar.
一个高度敏感的接收器将每个反射脉冲转换,使其与其他测量脉冲波相平均。
A highly sensitive receiver converts each reflected pulse to waves that are averaged with other pulse measurements.
数字化设计是本系统的特点,系统最终生成的三相spwm脉冲是基于三相正弦调制波和三角载波比较得到的。
Digital design is the main character of this system. The three-phase SPWM pulses are generated through sine wave compared with triangular wave.
实验结果表明,采用微机软件实现脉冲移相控制,可有效地改善脉冲对称度,提高整流输出电压精度。
The experimental results show that the pulse shifting phase control by using software can improve effectively the pulse symmetry and the precision of the d. c. output voltage.
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