Flight Vehicle Tracking Based On DBF Under Multi- Disturbances

Along with our country multi- flight vehicles observation and control system development, which will appear many flight vehicles in a control station sphere of action. Simultaneously It exists in many flight vehicles in the situation, and requests the ground station to be able to carry on the track observation and control to some flight vehicle at the same time, in the same time remove other flight vehicles the disturbance. If we use traditional the narrow beam antenna to carry on the track observation and control to the goal, it inevitably causes the antenna to carry on between many flight vehicles beats the track, this regarding the huge antenna guidance, the servosystem said realizes with difficulty. Therefore the ground station to the multi- flight vehicles track and the observation and control question is in the TT&C discipline hot topic, at present it still has not been able to obtain the very good solution. This article in view of this question, based on the numeral beam forming (DBF) on, hopes to use the feasible track algorithm to come to the goal flight vehicle to carry on the track, simultaneously selects the algorithm to achieve the effect ofsuppression to many disturbances goal.This article in view of the multi- disturbances under based on the DBF flight vehicle track, mainly studies the content to include:â‘ First from the array supposition, the signal supposition, the array antenna expression, the antenna geometry structure several aspects,we has conducted the research to the array antenna,and take uniform circular array as the research model through the comparative analysis determination , and has produced the mathematical model.â‘¡Based on the analysis of numeral beam forming technology , the introductionof direction of wave arrival (DOA) to estimate that, achieves the ground station to the spatial flight vehicle direction recognition. First analyzed and compared several kind of commonly used of DOA estimate algorithm fit and unfit quality, then determined DOA estimate algorithm. In the DBF auto-adapted algorithm needs a reference signal, this reference signal may be the time signal, also may be the spatial signal. Space reference signal obtaining, actually is expected to the signal of DOA estimate question.â‘¢Based on the digital wave beam formation, selects the feasible gradient tracking algorithm to realize the ground station's tracking of the goal flight vehicle, simultaneously adopts the G-S algorithm to complete the goal zero falls, and achieve the the effect of interference suppression . Through the establishment array signal model, carries on the software simulation with tracking and suppression process, at last carries on the analysis and the summary to the simulation experiment result.