Patent RU-2368077-C1 (RU)
Title: Method for transmission of information
Inventor: KARPENKO MIKHAIL PETROVICH
IPC: H04B5/00
Filed: 2008-02-19
Granted: 2009-09-20
Abstract: FIELD: physics, radio engineering. 
     SUBSTANCE: invention is related to communication systems and is designed for retransmission of radio-television signals. Substance of invention consists in the fact that method for transfer of information includes aiming of retransmitter receiving antenna at signal source by means of receiving antenna rotation by tilt angle and azimuth, with its further accurate aiming at signal source, and also aiming of transmitting antenna of retransmitter to subscriber station in compliance with calculated azimuth and tilt angle. Prior to rotation of receiving antenna by tilt angle to signal source, scaling mode is realised, in which receiving antenna is turned by tilt angle at calculated angle, and its position is fixed, besides rotation is carried out in the mode of the second speed, which is 4-10 times less than the first mode speed. In computer device calculated angle is compared with actual angle value measured with the help of tilt-angle scale of receiving antenna, correction for angular speed is identified. Indication devices display calculated tilt angles of signal source and subscriber station. Receiving antenna is turned to signal source by tilt angle in the first speed mode, if value of program angle is more than calculated threshold value. One or more corrections of receiving antenna position are carried out, to take tilt angle to calculated value and to fix this position of receiving antenna. Mode of receiving antenna rotation scaling is carried out by azimuth similar to scaling mode by tilt angle. Receiving antenna is turned by azimuth in mode of the first speed, maximum value of signal emitted by signal source is measured. In specified angle after passing though maximum value of signal, receiving antenna is stopped, and receiving antenna is turned in mode of the second speed in reverse direction with stop whenever signal increases up to threshold value, which makes from 30 to 70 percent from maximum value. Value of azimuth measured with the help of receiving antenna azimuthal scale is introduced into computer device. Receiving antenna is rotated in the mode of the second speed in the same direction with stop via specified angle with passing of signal maximum value and the second threshold value, which is equal to the first one. In mode of the second speed receiving antenna is rotated in reverse direction with stop, when signal increases up to the second threshold value. Value of measured azimuth is introduced in computer device, using two found values of azimuth, source of signal azimuth is defined. One or two corrections of receiving antenna position are carried out, to bring the azimuth to found value. Mode of transmitting antenna rotation scaling is realised by tilt angle, as well as rotation of transmitting antenna to subscriber station by tilt angle, one or two corrections of transmitting antenna position to bring tilt angle to calculated value and fixation of this position. Mode of transmitting antenna rotation scaling is carried out by azimuth, as well as rotation of transmitting antenna to subscriber station by azimuth, one or two corrections of transmitting antenna rotation ti bring azimuth to calculated value and fixation of this position. 
     EFFECT: simplified equipment of retransmitter, reduction of its mass and dimensions, lower power consumption. 
     3 dwg