High-speed Aircraft Control System Beam Tracing Algorithm And Dsp Implementation

Beam-tracking is responsible for an extremely important role in the high-speed aircraft telemetry, tracking and command(TT&C) system of missiles and spacecraft. It is the basis to ensure data reliability and continuous interaction between the high-speed aircraft. It is also considered as one of the most effective means to improve anti-interference ability of high-speed aircraft TT&C system and reduce the power consumption of devices. To grapple with this challenge, the beam-tracking algorithm should have the following capabilities, such as anti-interference ability, fast convergence characteristics and fast signal processing capabilities.The dissertation focuses on the beam-tracking subsystem and its engineering realizations to do some work as follows:1. The thesis analyzes the way and the signal model of array calibration firstly. Then the thesis discusses algorithm principles and performance. Finally, base on the computer simulation results, algorithm performance and engineering to determine the directly related algorithm as the array calibration algorithm.2. The thesis analyzes the signal model of beam-tracking algorithm firstly. Then the thesis discusses many classical beam-tracking algorithms performance, and the Stochastic Gradient Constant Modulus Algorithm (SG-CMA) as the beam-tracking algorithm. The Linear Desired signals Constrained Stochastic Gradient Constant Modulus Algorithm (LDC-SG-CMA) and the Linear Interference signals Constrained Stochastic Gradient Constant Modulus Algorithm (LIC-SG-CMA) are proposed to overcome the shortcoming of the SG-CMA. Finally, the effectiveness of the beam-tracking algorithm was proved by computer simulation.3. The data communication module, data preprocessing module, array calibration algorithm module and beam-tracking algorithm module are implemented on the beam-tracking subsystem of the high-speed aircraft TT&C system. And the programs of array calibration and beam-tracking have been optimized. The feasibility and efficiency of array calibration and beam-tracking was proved by the digital IF test.4. A hardware and software cooperation-test system has been designed to demonstrate the feasibility and reliability of beam-tracking subsystem.