Microwave angle sensor

Abstract

Abstract PURPOSE:To improve the sensitivity of detection for angle error, by distributing two antennas opposite to each other with a space secured between them in a specific relation when a sensor put on an artificial satellite to detect the angle of an earth station from the beacon source of the earth station. CONSTITUTION:If an inclination is given to a beacon electric wave radiating source by a directional angle theta of the arriving electric wave, the sum and difference signals ESIGMA and EDELTA are obtained through a comparator 11 and from the signals received at the antennas 10a and 10b. The signal EDELTA is made to pass through a 90 deg. phase shifter 12, and the signal ESIGMA undergoes the synchronous wave detection through a synchronous wave detector 13 as a reference signal. Thus a signal related to an angle error theta is obtained. The error voltage is proportional to a space (d) between the antennas 10a and 10b and adversely proportional to a wavelength lambda. As a result, the detecting sensitivity is increased for the angle error by increasing the space (d) and regardless of the opening diameter of the antenna. In this connection, the space (d) is set in a relation specified in the equation to the fluctuating range H of a device containing the antennas.

Inventors

• 👤 Kenji Ueno
• 👤 健治 上野
• 👤 Makoto Ando
• 👤 真 安藤
• 👤 Takashi Kataki
• 👤 孝至 片木
• 👤 Yasuo Takamatsu
• 👤 高松　泰男
• 👤 Tetsuo Haruyama
• 👤 春山　鉄男
• 👤 Hideji Kameo
• 👤 亀尾　秀司

Bibliographic Details