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车辆监测用测速雷达是依据多普勒效应原理实现的。由雷达发出一束微波,遇被测目标(车辆)时微波被反射回来,再由雷达接收反射波。如果目标相对于雷达有距离上的运动,反射波的频率将与发射频率发生差异,而这种差异的大小正比于目标与雷达的相对运动速度。于是,雷达通过检测反射波频率和发射波频率的差,就可以计算出被测车辆的移动速度。本次课程设计是利用离散付里叶变换进行频谱分析,设计数字滤波器组,并对滤波器组加窗降低副瓣,通过频域方法测量速度。-Vehicle monitoring using radar gu
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HATA Model MATLAB Simulation In wireless communication, the Hata Model for Urban Areas, also known as the Okumura-Hata model for being a developed version of the Okumura Model, is the most widely used radio frequency propagation model for predicting
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概述军用飞行目标对微波雷达的散色特性,讨论目标的高频散色机理,RCS分析方法及减缩途径,以及低RCS目标探测技术-Overview military flying targets scattered on color characteristics of microwave radar, discuss the target color high-frequency dispersion mechanism, RCS analysis and reduction pathways, and lo
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微波方面,用于某一段或某一频率,相噪低,信号稳定,电路简单,具有非常好的运用。-Microwave, for a period or a certain frequency, low phase noise, signal is stable, simple circuit, has the very good.
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用于AWR的微波设计简单的开发模板,能够直接适用大多数开发,如四分之一波长阻抗变换器,分频选择器等-The simple development template for microwave design of AWR can be directly applied to most development, such as 1/4 wavelength impedance converter, frequency dividing selector, etc.
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用于计算积雪微波辐射传输过程的经典的MEMLS模型-A thermal Microwave Emission Model of Layered Snowpacks (MEMLS) was developed for the frequency range, 5 to 100 GHz
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用modbus协议和SPI接口实现微波模块的频率和幅度控制功能-Use modbus protocol and SPI interface to implement the frequency and amplitude control of the microwave module
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ADF4355是微波宽带(54-6800MHz)可实现小数N分频或整数N分频锁相环(PLL)的频率合成器,高分辨率38位模数,低相位噪声电压控制振荡器(VCO),可编程1/2/4/8/16/32/64分频输出,模拟和数字电源为3.3 V,主要用在无线基础设施(W-CDMA,TD-SCDMA,WiMAX,GSM, PCS,DCS,DECT),点到点/点到多点微波链路(ADF4355 microwave broadband (54-6800 MHZ) can realize the decimal
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微波毫米波系统的设计,晶体管选用的是ne3210s01。
设计指标:
1.中心频率7.78G,通带120MHz
2.通带内增益达到16.2dB,波纹小于0.5dB
3.通带内的噪声系数小于0.5
4.通带内输入驻波比小于1.5,输出驻波比小于2
5.系统特性阻抗50Ω
6.微带线基板厚度0.508mm,相对介电常数3.66(The design of microwave and millimeter wave system is based on ne3210s01.
Des
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