(十九)MIT公开课雷达系统工程之发射与接收

发布时间 2023-08-15 08:47:12作者: SymPny

0 写在前面

2023 五一快乐,大家~~

雷达发射与接收机设计主要影响雷达方程中平均功率、系统温度和系统损失。

1 发射机

1.1 基本介绍

理想发射机应具有以下性质:需要折中。

简化的雷达发射与接收系统的框图:

1.2 高功率放大管

高功率发射管框图:

Klystron – High Power Amplifier:

Klystron工作原理:

Example – S-Band Klystron:

MIT/LL Millstone Hill Radar Klystron Tubes (Vacuum Devices):

How Big are High Power Klystron Tubes ? Millstone Hill Radar Transmitter Room:

行波管:

Photograph of Traveling Wave Tubes Another Type of Tube Amplifiers:

Crossed Field Amplifier (CFA):

Crossed Field Amplifier实例:

Comparison of Different Types of High Power Amplifier Tubes:

Coaxial Cavity Magnetron:

Coaxial Magnetrons:

Other Types of High Power Amplifiers:

1.3 Solid State RF Power Amplifiers

Solid State Power Transistors Available Commercial Devices:

Solid State RF Power Amplifiers:

Uses of Solid State Amplifiers in Radar:

Solid State Radar Examples - PAVE PAWS:

Solid State Radar Examples - TPS-59:

Solid State Radar Examples - RAMP:

Example of Solid State Transmitter: Radar Surveillance Technology Experimental Radar (RSTER)。

Average Power Output Versus Frequency:

Types of High Power Amplifiers:

Methods of Power Amplification:

2 接收机和发射波形产生器

Radar Transmitter/Receiver Timeline:

Radar Receiver:

Shared Functionality in Waveform Generation and Receiver:共享变频、放大、滤波。

雷达变频概念:

波形产生与接收的简化框图:

雷达接收机框图:在确定雷达测量的噪声水平时,从天线到第一放大器的部件是最重要的。

3 其他发射/接收子系统

3.1 双工器

双工器工作原理:

双工器:

Example - Balanced Duplexer:发射状态。

Example - Balanced Duplexer:接收状态。

3.2 其他发射子系统

脉冲调制器的基本单元:

“Crowbars”:

3.3 波导和传输线

不同波导配置:

Flexible and Ridged Waveguide:

Waveguide Cutoff Wavelength / Frequency:

Waveguide Subsystems:

Rotary Joint:

Stripline Transmission Line:

Microstrip Transmission Line:

Comparison of Transmission Line and Waveguide Characteristics:

X Band Slotted Waveguide Antenna: For Commercial Airborne Weather Radar。

3.4 微波集成电路技术

Introduction to Microwave Integrated Circuit (MIC) Technology:

Hybrid Microwave Integrated Circuit:

Example - Microwave Integrated Circuit: MIC Power Amplifier used in TPS-59 radar。

Example - Microwave Integrated Circuit: S-Band T/R Module。

Layout of a Typical Monolithic Microwave Integrated Circuit (MMIC):

Monolithic Microwave Integrated Circuits (MMIC) Receiver:

Integration into 64 Element S-Band Subarray:

X-Band T/R Module Using MMIC Technology:

4 雷达发射与接收架构

Radar Transmitter-Receiver Architectures:

Radar Transmitter-Receiver Architectures:

Radar Antenna Architecture Comparison:

Active Array Radars:

Block Diagram of Active Radar Array Using T/R Modules:

Transmit / Receive (T /R) Module Configuration:

Power Amplification:

Example of Power Amplification in a T/R Module:

Array Radar - Digital on Receive:

Array Radar - Digital on Transmit & Receive:

5 总结讨论

Summary:

Summary (continued):

6 参考文献

[1] 百度翻译

[2] MIT 公开课: Radar Systems Engineering