QA4590A
Radar temperature and humidity test system
Version: V3.0
一、 System design principle
Millimeter wave radar will be applied to various scenes, and the scene temperature will span a wide range, and the influence of different temperature and humidity on the performance of radar is severe. Especially, millimeter wave radar, as an important sensing sensor of automatic driving, is related to personal safety. So it is very important to verify the performance of millimeter wave radar in different temperature and humidity environment.
According to the application requirements of users, the system of testing Tx direction diagram and power diagram of radar in a specific environment of temperature and humidity box is designed to verify the stability of radar detection performance in different temperature and humidity environment.
二、Characteristics of far-field system
meets the vehicle gauge temperature and humidity test standard: GB/T 28046.4-2011
System test is intuitive, simple and convenient;
frequency range: Compatible with various radar standards
supports radar passive antenna/active product directional diagram parameter measurement
supports measurement of radar product rf signal quality parameters
supports radar product target simulation parameter measurement
supports temperature shock experimental parameter measurement of radar product
三、 main technical indicators
compatible radar standard: 24GHz, 60GHz, 77GHz, 79GHz (associated with system RF link)
temperature range: -45℃ - +95℃ (other temperature range can be customized)
temperature stability: ±1℃
temperature uniformity: ±2℃
heating rate: ≧2℃~3℃/min
cooling rate: ≧1℃/min
humidity range: 10%-98%RH
Humidity stability: ±2% RH
temperature uniformity: ±3% RH
temperature and humidity box effective volume: ≧1.0m3
level Angle range: ±80 degree
Angle accuracy: ±0.1 degree
transparent wave loss: ≦1dB@60GHz-90GHz
system dynamic range: ≧50dB@60GHz-90GHz
absorbing material vertical absorption: ≧45dB@20GHz~90GHz
use temperature: 0℃~+45℃
storage temperature: -25℃~+70℃
Uses humidity: 5% to 95% RH
uses power: 380V±10%, 50Hz
四、 System composition
temperature and humidity box
millimeter wave transparent sphere
absorbing material environment
System System turntable
System RADIO frequency link
test system software
五、Radio frequency link
The radio frequency link of the system is compatible with Keysight brand test instrument, and the passive antenna measurement is based on PNA network analyzer. The rf link of millimeter wave radar products takes signal generator, spectrum analyzer, digital oscilloscope and radar target simulator as the core. At the same time support user - defined instrument upgrade;
Figure 1: Test system RF link
六、System software
Figure 2: Test system software direction diagram interface
Figure 3: Test system software power diagram interface
This system provides complete passive/radar product system testing software:
antenna testing software: 2D/3D direction diagram, gain, sidelobe level, efficiency, beam width, etc.
Tx signal quality analysis: 2D/3D direction diagram, gain, bandwidth, phase noise, FMCW modulation linearity, etc
Tx signal quality analysis: 2D/3D direction diagram, frequency, sensitivity, and other parameters
radar target simulation: range, velocity, RCS range/accuracy/resolution, static/dynamic target simulation, power diagram
software supports user-defined development of user DUT communication protocol, supports automation system and generates test report in user format;
