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Generation Mechanism and Characteristic Analysis of Dual-Frequency Pseudo-Signal Interference of the Swept-Frequency Radar.
- Source :
- International Journal of Antennas & Propagation; 10/20/2022, p1-14, 14p
- Publication Year :
- 2022
-
Abstract
- In order to master the law of the pseudo-signal interference effect of dual-frequency electromagnetic radiation in typical radar equipment, a certain type of Ku-band swept-frequency ranging radar was used as the test object to carry out single-frequency continuous wave and dual-frequency continuous wave pseudo-signal interference effect experiments. Through experiments, it is found that dual-frequency electromagnetic radiation will cause "hill" and "spike" type pseudo-signal interference to the swept-frequency radar. Based on the frequency analysis of the radar receiving circuit, the interference mechanism of the dual-frequency pseudo-signal is revealed, and the morphological characteristics and distance law of the pseudo-signal are explained. The variation law of the pseudo-signal level with interference field strength is obtained. The results show that the in-band dual-frequency nonintermodulation interference is similar to the single-frequency interference, and the only difference is that the number of pseudo-signals increases; when the interference frequency difference is about 400∼600 MHz, the out-of-band dual-frequency second-order intermodulation signal will cause "hill" type pseudo-signal interference, and the pseudo-signal distance is random; when the interference frequency difference is less than 5 MHz, both the dual-frequency second-order intermodulation signal and the third-order intermodulation signal will cause "spike" pseudo-signal interference inside and outside the radar operating frequency band; the pseudo-signal distance is fixed. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 16875869
- Database :
- Complementary Index
- Journal :
- International Journal of Antennas & Propagation
- Publication Type :
- Academic Journal
- Accession number :
- 159798488
- Full Text :
- https://doi.org/10.1155/2022/2363224