in this paper a new guidance technique for ballistic missiles and launch vehicles is proposed. generally the lambert guidance is used to generate missile nominal (correlated) parameters through powered flight to put it in a ballistic flight path. because of uncertainties and undesired factors, the nominal position and velocity obtained by lambert technique need to be followed in actual flight. ...

With the increasing development of UAV technology, formation flight has also changed from single target task execution to multi-target cooperative execution. When is developing rapidly in direction clustering, there are too many external interference factors. Therefore, electromagnetic silence should be maintained for a long time whole flight, and number times when transmitting wave signals out...

In order to maintain the formation of UAVs during flight, pure azimuthal passive positioning is generally used adjust position UAVs. accurately perform UAV positioning, this paper establishes a single-objective optimization model with passively received signals based on polar coordinates UAVs, combined geometric knowledge such as sine theorem and triangle properties. And then optimized improved...