排序方式: 共有2条查询结果,搜索用时 0 毫秒
1
1.
Taira S. Tanaka M. Ohmori S. 《IEEE transactions on aerospace and electronic systems》1991,27(2):354-360
The performance of an airborne phased-array antenna, which was developed and evaluated onboard a commercial aircraft using the Engineering Test Satellite V (ETS-V), is reported. The system requirements and the antenna configuration that satisfies them are described. The radiation pattern, gain and axial ratio, noise temperature and ratio of gain to noise temperature, and environmental characteristics are presented. The results obtained by the flight experiments demonstrate that the performance of the antenna is the same as that on the ground, so that the antenna is suitable for installation in an aircraft for satellite communications 相似文献
2.
Ohmori S. Hase Y. Wakana H. Taira S. 《IEEE transactions on aerospace and electronic systems》1992,28(3):788-796
The world's first aeronautical satellite communication experiments, conducted at L -band frequencies using a commercial aircraft, are described. An airborne antenna with electronically steerable beam and communication equipment was installed in a B-747F freighter flying over transoceanic flight routes. The satellite used in these experiments is the Engineering Test Satellite-Five (ETS-V). During the test period, various experiments, such as antenna pattern measurements, transmission performances, and voice quality evaluation were conducted. As the airborne antenna is the key component for the aeronautical satellite communication system, emphasis has been placed on antenna characteristics. Its performance is found to be closely related to the fading characteristics in low-elevation areas and to transmission error performance 相似文献
1