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FMCW/FSK/CW/SAR雷达教学系统

FMCW/FSK/CW/SAR雷达教学系统

FMCW、FSK、CW、SAR雷达教学系统, RADAR EDUCATIONAL KIT.

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FMCW、FSK、CW、SAR雷达教学系统, RADAR EDUCATIONAL KIT.

SkyRadar雷达培训与教学系统为普通高等院校、航校、海事院校以及军事院校提供了可以在室内、室外教学和培训的便携式真实雷达系统,它具有覆盖范围小,但分辨率高等特点,同时还配备有教学需要的课程目录、培训文档及习题,可以帮助老师和学生更生动的掌握雷达原理和雷达图像。

SkyRadar雷达教学系统(系统一)主要提供以下功能:

  • FMCW雷达、CW雷达、频移键控(FSK)雷达培训与教学

  • 合成孔径(SAR)雷达培训与教学

产品组成

FMCW 基础模块是系统一系列应用的核心部分,它能提供多普勒雷达、单脉冲雷达和频移键控(FSK)雷达功能。以它为基础可以扩展为SAR雷达。FMCW还有功能强大的软件,基于RFbeam开发套件ST200做了特定的二次开发,可以实现对FMCW, Doppler, FSK, SAR模式的观察、操作和研究。

FMCW雷达系统组成(可选配)

◆ 一个相控阵天线

◆ 一个数字信号处理 DPS 单元

◆ 一个收发信机

◆ 一个电动控制单元

◆ FMCW 可视化控制软件

◆ 标准配置的笔记本

FMCW雷达系统扩展为SAR

◆ 在FMCW的基础上,加入一个由直流电动单元驱动的线性轴,和一个控制单元。

SkyRadar SAR - GUI settings

SkyRadar FMCW Base Module placed on the SAR extension

基于FMCW的SAR模式扩展

    A synthetic aperture radar is a radar which produces radar images of higher resolution than normal radars through the shooting of a series of radar images of the same target but from spatially displaced positions.  In real life these images are created by side-lobe radars of aircrafts. SkyRadar's SAR add-on extends the radar through a controlled linear axis and imaging logic - making it work as a high resolution tool in IoT and industrial applications..

    The system operates with the NextGen 8 GHz Pulse Radar the SkyRadar FreeScopes Software which provides many scopes (A-Scopes, B-Scopes, PPI), control interfaces and filters. The module allows for highest flexibility in the learning process, while providing high-resolution at close distance with an electro-magnetic emission of a small fraction of that of a mobile phone. 

The SAR Module is an extension of the NextGen 8 GHz Pulse module and the FMCW base module. A step-motor-controlled linear axis allows movement of the transceiver and antenna and thus produces radar images with defined time-stamps and positions for SAR operations. SAR aggregates the data in a time-multiplex approach. SAR allows producing resolutions which go far beyond results of a normal antenna.

SAR-Arrangement-smallFMCW-without-SARFMCW-with-SAR


The left image show the measurement arrangement: a table with a parabolic reflector as measurement target. The second image shows a blurry simple FMCW measurement of the target. The third image shows a SAR image, exhibiting the clear contours of the parabolic reflector and the table (in a top-down view).

SAR扩展单元特征指标

  • Operating Modes (enabled in the hardware)

    • FMCW (when using the 24 GHz FMCW base unit)

    • Pulse (when using the 8 GHz NextGen Pulse Radar)

  • Scopes (enabled through FreeScopes) 

    •  B-Scope (time-scale), displaying the SAR image

    • A-Scope

  • Amplification

    • Amplification of raw signal (IQ signal) at receiver

    • Amplification of filtered signal in the scopes

  • Filters and Signal Treatment

    • Sensitivity Time Control (STC)

    • Signal Threshold and Limiter

    • CFAR Dynamic Threshold

    • Cutting out selections of the signal range

主要教学实验功能

The FMCW Base Module can be applied to experiment on the following subjects (selection):

  • Experiments on Synthetic Aperture Radars Calibrating a radar setup using amplification, filters and settings

  • Experiments on amplification of source as well as of the signals 

  • Allows analyzing performance and false alarm tolerances through adjustment of the sensitivity.

  • Adjustable decision threshold allowing for experiments on background noise.

Parts (Basic Configuration)基本配置

The SAR Module consists of:

  • one (1) linear axis (length on demand) driven by a step motor

  • one (1) control unit providing

  • drive control and visualization system

  • one SAR server

  • one (1) SAR management software (included in the server)

  • management software licence

  • one (1) cable set.


  • 数据处理性能

◆ 支持多普勒,FMCW, FSK, 单脉冲。

◆ 与主机通过USB相连

◆ 主板低噪声供电

◆ 与不同雷达设备的接口

◆ 本地多普勒接收机放大

◆ 高性能16bit数据处理

◆ 250k Samples/s ADC and DAC

◆ 紧凑和坚固的结构

◆ 强大的信号分析计算机软件

◆ NI LabVIEW ® DAQmx USB 接口


相控阵天线控制器

SkyRadar相控阵天线控制器是为FMCW培训系统开发的相控阵天线模块,它由4个八目天线,一个场测量器组成,可以利用控制器软件,调整四个天线的辐射角度而形成不同的天线覆盖图,然后用场测量设备,来检验调整的天线辐射方位。

软件性能

FMCW软件提供四种模式:

◆ Doppler Mode: 目标速度和方向测量。

◆ FMCW Mode: 目标距离测量。

◆ FSK Mode: 对运动目标高分辨率的距离测量。

◆ SAR Mode: 测量目标,绘图。

用户可以通过计算机配置运行模式,传感器类型,抽样率,带宽,滤波器,图形分辨率等。

教学应用

SkyRadar是一个真实的雷达,而不仅仅是简单的模型,所以可以以实物运行状态进行教学和观察,让抽象的雷达理论、电路理论、雷达成像等技术实物化, 下面举例列出部分可以完成的教学任务:

◆ 研究雷达收发信号波形特征。

◆ 研究不同调制方式的信号对比特征。

◆ 研究FFT的信号特征。

◆ 研究收发信号的相位关系。

◆ 评估先进的短波雷达应用。

◆ 开发自己的数据处理算法。

◆ 信号分析和记录。

◆ 研究空中交通管理、国防、海军、空中地理遥感摄像等领域的问题。

教学文档和培训

SkyRadar模块化产品的重要组成部分是包括非常专业的文档(英文)和详细的教学课程。同时用户也可以选择购买SkyRadar对培训讲师的现场培训课程。客户可以到SkyRadar公司进行学习,也可以请SkyRadar的专家到客户所在地进行培训。


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