Realization Method of Phased Array Antenna Gain Adaptive Control

Abstract

The invention provides a method for achieving phased-array antenna gain self-adaptation control. The method can keep small output allowances, and improves the working efficiency of equipment. According to the technical scheme, the method comprises the steps that a phased-array receiving array element receives pitching difference signals, azimuth difference signals and signals, the pitching difference signals, the azimuth difference signals and the signals are formed by target signals, corresponding frequency converters carry out down frequency conversion processing on the pitching difference signals, the azimuth difference signals and the signals respectively, the pitching difference signals, the azimuth difference signals and the signals are then sampled through analog-to-digital converters correspondingly connected and are sent to a trapping and tracking device, signal trapping and signal tracking are carried out, an azimuth angle and an pitching angle are output to a wave controller, signal-to-noise-ratio detection and target distance evaluation are carried out by the wave controller and a first signal separating path, the ETRP value of an emitting antenna is calculated according to a distance evaluating value, and the quantity combination of emitting antenna array elements and beam pointing control are achieved through the wave controller; high-speed data input in a high-speed modulator are modulated on an emitting signal carrier wave and are sent to DAC to be reconstructed and processed, and the formation of space beams pointing a target direction is achieved.

Description

technical field [0001] The invention relates to the field of measurement and control communication, and provides a method for realizing adaptive control of antenna gain for a phased array system measurement and control system, so as to realize the output of the optimal EIRP value under the condition that the system satisfies a certain transmission rate. Background technique [0002] The phased array antenna uses a certain number of radiating array elements, and uses a wave controller to control the phase of the radiation signal of each array element, so as to realize the synthetic beam of the array elements pointing to a certain spatial direction. The phased array antenna has the characteristics of high gain and fast scanning of the beam direction. The gain of the phased array antenna increases with the increase of the number of array elements, and the antenna beam width narrows with the increase of the number of array elements. With the development of measurement and contro...

AI Technical Summary

Problems solved by technology

With the development of measurement and control communication technology, the demand for high-speed data transmission is urgent, and high-speed data transmission requires the system antenna to have a high equivalent radiated power EIRP value. The EIRP value of a phased array antenna is the sum of the antenna gain and the output power of all array elements. The beam of the phased array antenna with high EIRP value is narrow. When capturing the target signal, it is difficult to align the narrow antenna beam with the target, and target guidance is required. In severe cases, there is enough margin for the antenna EIRP value. In this way, the phased array antenna works in the full power output state all the time during the actual system work process, which causes the antenna equipment to consume a lot of power and waste a lot of system energy. At the same time, it must use It is specially designed for the heat dissipation measures of the phased array antenna. For the aircraft platform with tight energy demand, this design mode is quite unfavorable.

Images