Abstract
A new kind of image type glide path beacon subsystem of Instrument Landing System (ILS) was reported. Capture effect is designed to overcome far-field (FF) reflectors and rising terrain. Low angle CSB signal was highly depressed, was ?41 dB at 1? comparative to the max value. Both Carrier and Side Bands (CSB) and Side and Bands Only (SBO) signals were radiated by three antennas. Difference in Depth of Modulation (DDM) provided good linear variation around glide path angle (θ). At near field area, the site of near-field (NF) monitor was just about 57 m in front of the system, needed less length of reflection plane than that of M-array system, result from the system had only 90% of the M-Array antenna height.
Highlights
The Instrument Landing System (ILS) had its beginnings in the United States and England during the years 1939 to 1945 [1]
Low angle CSB signal was highly depressed, was −41 dB at 1 ̊ comparative to the max value. Both Carrier and Side Bands (CSB) and Side and Bands Only (SBO) signals were radiated by three antennas
ILS was adopted by International Civil Aviation Organization (ICAO) in 1947 and will be in service until at least 2020 [2]
Summary
The Instrument Landing System (ILS) had its beginnings in the United States and England during the years 1939 to 1945 [1]. The immediate ground plane needs more stringent smoothness criteria; M-array glide path antenna [5]. It is called capture effect, using two frequencies to provide course and clearance. Since it uses separate transmitters to provide the course and clearance, it is tolerant to far-field reflectors and rising terrain This new type could tolerant to more difficult sites and needs less size of smooth ground and reflection plane. Because this system looks as a shrunk M-Array system, called S-Array glide path antenna. The several parameter of S-Array is compared with other kind of image type glide path beacon and proved the best performance
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
