一种基于交比不变原理测量雷达吸波材料反射率的方法
By employing a frequency domain measurement method based on the principle of cross-ratio invariance, and utilizing a vector network analyzer and three sets of calibration components, the accuracy problem of radar absorbing material reflectivity measurement at low frequencies was solved, achieving precise measurement.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- NORTHWESTERN POLYTECHNICAL UNIV
- Filing Date
- 2023-07-16
- Publication Date
- 2026-07-17
AI Technical Summary
Existing technologies struggle to accurately measure the reflectivity of radar absorbing materials at low frequencies. Traditional time-domain methods yield inaccurate results at low frequencies, and the transmission line method cannot measure under oblique incidence conditions.
A frequency domain measurement method based on the principle of cross-ratio invariance is adopted. By constructing a measurement system, using a vector network analyzer and three sets of calibration components, the environmental parameters are calibrated based on the principle of cross-ratio invariance, and the reflectivity of the sample under test is calculated.
It enables accurate measurement of the reflectivity of radar absorbing materials at low frequencies, simplifies the testing process, reduces the requirements for testing equipment, and improves measurement accuracy.
Smart Images
Figure CN116879321B_ABST