Analysis on the Significant Improvement of Radiation Performance and the Adjustment Effect of S-Type Glide Path Antenna
Equipment Operation Monitoring Center, CAAC, East China Regional Air Traffic Management Bureau of Civil Aviation of China, Shanghai 200335,
| Abstract: | Both the S-type glide antenna and the M-type glide antenna consist of three antennas: upper antenna, middle antenna, and lower antenna. There are significant differences in the radiation signals of the two types of antennas. Based on the theoretical basis of antenna excitation amplitude, phase, and electromagnetic radiation characteristics, a three-dimensional space radiation mathematical model is constructed. Firstly, the basic signal radiation characteristics of the S-type antenna are analyzed theoretically based on the signal principle and feed method, with the results compared to those of the M-type. Then, from the perspective of antenna parameter adjustment according to the flight checking procedure and sampling rules, the changes in threshold crossing height (TCH), glide path angle, and symmetry of signal are calculated by signal simulation. Further analyze the variation patterns and trends of the above parameters through dynamic analysis of antenna adjustment. This visually demonstrates the high performance and good adjustability of the S-type antenna. |
| Keywords: | Glide Path Antenna; Performance Improvement; Glide Path Angle |
| DOI: | 10.57237/j.se.2025.01.002 |
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Received: 25 July 2025
Accepted: 28 October 2025
Published Online: 12 November 2025
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