We found a match
Your institution may have access to this item. Find your institution then sign in to continue.
- Title
Test Evaluation Method for Second-order Intermodulation False Alarm Interference.
- Authors
Xue DU; Guanghui WEI; Dalin WU; Xiaodong PAN
- Abstract
Aiming at the quantitative evaluation requirements of radar second-order intermodulation false alarm (SIFA) effect, a radar SIFA effect model is established from the field-circuit coupling mechanism, and the parameter test method of the model is given. Taking a certain type of radar as the test object, the SIFA effect test is carried out by using the method of electromagnetic injection equivalent substitution irradiation. The results show that the tested radar will produce a SIFA signal higher than the selected sensitive level when the frequency difference of dual-frequency electromagnetic interference (EMI) is within 3 MHz and the frequency offset is within ±200 MHz. Using the model parameters of the SIFA interference effect measured in the experiment, it is assumed that they do not change with the interference field strength. Combined with the SIFA interference field strength of the tested radar and the single frequency blocking critical interference field strength, the effect model can evaluate the degree of radar SIFA interference.
- Subjects
RADAR interference; INTERMODULATION; TEST methods; EVALUATION methodology; ELECTROMAGNETIC interference; FALSE alarms
- Publication
Radioengineering, 2024, Vol 33, Issue 2, p329
- ISSN
1210-2512
- Publication type
Article
- DOI
10.13164/re.2024.0329