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1. (WO2018049986) ROTATION MISSING PLOT TRACKING SYSTEM AND METHOD FOR DOUBLE-REFLECTION-SURFACE SATELLITE ANTENNA

Pub. No.:    WO/2018/049986    International Application No.:    PCT/CN2017/099839
Publication Date: Fri Mar 23 00:59:59 CET 2018 International Filing Date: Fri Sep 01 01:59:59 CEST 2017
IPC: H01Q 3/20
Applicants: SINOTRUST MARINE (ZS) SATELLITE COMMUNICATION CO., LTD.
中信海洋(舟山)卫星通信有限公司
QI, Changsong
亓常松
Inventors: QI, Changsong
亓常松
PAN, Hongjun
潘洪军
ZHUO, Weiguo
卓卫国
YU, Haihua
虞海华
Title: ROTATION MISSING PLOT TRACKING SYSTEM AND METHOD FOR DOUBLE-REFLECTION-SURFACE SATELLITE ANTENNA
Abstract:
Disclosed are a rotation missing plot tracking system and method for a double-reflection-surface satellite antenna, which are used for solving the deficiency of an existing satellite antenna automatic tracking system, characterized by comprising a main reflection surface, a secondary reflection surface and a feed source, wherein the main reflection surface is provided with a servo tracking unit and a main control unit; the main reflection surface, the secondary reflection surface and the feed source are coaxially arranged; one of the main reflection surface and the secondary reflection surface can rotate around an axial centre and is provided with a rotation mechanism; and the rotating main reflection surface or secondary reflection surface is eccentrically provided with a signal local-failure zone. Compared with stepped tracking, the present invention has a high precision and is quick in response; compared with conical scanning tracking, a main reflection surface and a secondary reflection surface are coaxially arranged, thereby decreasing a side lobe, reducing the interference of an adjacent satellite and improving the applicability; and compared with single-pulse tracking, by using a rotating and eccentrical signal local-failure zone, a quasi-sinusoidal signal of a model intensity period change can be acquired, which has a simple device and a low cost.