The beamforming for an adaptive antenna system in multi-vehicles TT&C environment

Abstract

In a multi-vehicle environment, a TT&C (tracking, telemetry and command) system is realized through a unified spread spectrum framework. Adaptive antenna digital beamforming technologies are used to track, measure and command objects. A constant modulus array (CMA) and an adaptive signal canceller estimate the direction of arrival (DOA) of every signal and use the optimum weighted vector to form the beams. The phase-weighted vectors estimated from the DOA improve the processing gain as well as being utilized in transmitting a tele-command signal to form the beam for a specified object. Its processing performance is researched and simulated.