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.
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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