It is critical important to air defense forces fight against aerial targets effectively how to solve the problem of intermittent air route forecast under the conditions of EMI.

The route prediction for multiple unmanned aerial vehicles(UAVs) task allocation in dynamic battlefield is a complicated path planning problem characterized by multiple paths and real time demands.

This paper first introduces the basic concept,classification and application of trajectory prediction studies its developments in advanced aviation countries,and explains why it is necessary to develop our own trajectory prediction system.

The result shows that the trajectory prediction based on the cubic spline has high accuracy and practical engineering value.