The invention discloses a satellite antenna control system and a satellite finding method. The method comprises the following steps: (10) judging whether a satellite antenna aims at a working satellite, and if not, calling the tracking parameters of a reference satellite and controlling the satellite antenna to track the reference satellite; and (20) when the satellite antenna aims at the reference satellite, calculating the angle parameter difference between the working satellite and the reference satellite according to the longitude of the reference satellite, longitude of the working satellite, and latitude and longitude of the satellite antenna, and controlling the satellite antenna to move to the working satellite according to the calculation result. The invention enhances the reliability and accuracy of satellite finding by an antenna, reduces the tracking error rate of the antenna and reduces the labor intensity of the working personnel.

Satellite antenna control system and satellite finding method

A plasma polymer having residual functional (reactive) groups is formed on a substrate, a radiation curable coating composition is applied to the plasma polymer-coated substrate, and the radiation curable composition is radiation cured. The radiation curable composition contains a component which forms a polymer with the reactive groups of the plasma polymer, anchoring the cured composition to the plasma polymer which is anchored to the substrate.

Method of forming a radiation curable coating and coated article

Methods, systems, and devices are described for orienting a satellite antenna. In the methods, systems, and devices of the present disclosure, a satellite may provide multiple spot beams, each of the spot beams associated with a specific coverage area. The satellite may also transmit a wide beam downlink signal over a wide area beam having a coverage area that includes each of the spot beams. The satellite may receive an uplink beacon signal. The satellite antenna may be positioned according to azimuth and elevation determined from ground measurements of the spot beams and the satellite measurements of the uplink beacon signal.

Ground assisted satellite antenna pointing system

A method and system for Uplink Power Control in a satellite communication system comprising a geostationary satellite ( 2 ) communicating with a gateway station ( 3 ) applying the invention and at least two other gateway station ( 4 ) is described. The invention utilizes the existing communication signals in the satellite communication system to compensate for atmospheric distortion as scintillation and rain fading effects. The method is symmetric with regard to which gateway that utilizes the invention in a communication system thereby increasing the regulation of all communication signals in the system.

Satellite uplink power control

The present application includes systems and methods for determining pointing error of a satellite antenna. In one aspect a method for determining pointing error of a satellite antenna includes receiving, at a receiving station, a pointing error signal formed by the antenna and transmitted from a satellite, wherein the pointing error signal includes a first beacon (reference) signal and a modulated second beacon (error) signal. The receiving station may demodulate the received pointing error signal to recover the second beacon signal with respect to the first beacon signal, and based at least in part on the demodulated beacon signal, the receiving station may determine the pointing error of the satellite antenna.

Ground-based satellite antenna pointing system

A system and method for eliminating pointing error in a beacon tracking system due to uncontrolled differences in passive loss or in amplification of the separate signals involved in creating a pilot signal A locally generated reference signal (30) is radiated onto a set of feed horns (14), at least three (20, 22, 24) of which are used to track a pilot signal (18) The reference signal (30) is detected and used in an automatic gain control feedback loop (44, 46, 48) to maintain equal gain on the separate feed horn channels The equalized signal is processed (62) to produce precision tracking signals

Harold A. Rosen

Papers

Precision beacon tracking system