基于梯度法的对空中目标搜索与跟踪

基于捷联式角位移扰动稳定的抛物面天线步进跟踪广泛应用于运动载体对空中目标搜索与跟踪,但却存在跟踪速度慢和精度低的问题。针对此不足,研究了基于扰动速度稳定和梯度跟踪法的车载空中目标搜索与跟踪技术。抑制扰动速度的保持内环隔离车体摇摆,保持天线在惯性空间的指向。基于梯度法的跟踪外环确定目标方向和速度,快速跟踪目标,校正内环漂移。试验结果表明,该技术对硬件设备要求低,能快速、准确地跟踪空中目标。

Air Targets Acquiring and Tracking Based on Gradient Algorithm

The vehicular step-track paraboloid antenna,which is stabilized in the inertia space by compensating the disturbance angle,has been widely used to track air targets.But it has some primary shortcomings such as slow tracking speed and low accuracy.To solve the above problems,a vehicular air target tracking system,which integrates the techniques such as disturbance angle speed stabilized and the gradient tracking algorithm,was researched.The inner loop,which compensates the disturbance angle speed,can effectively separate the vehicular vibration and stabilize the antenna in the inertia space.The outer loop based on the gradient tracking algorithm can quickly determine the target's direction,and compensate the shift of the inner loop.The experimental results show that the proposed tracking system can quickly acquire and track the air targets.