Airborne Passive Measurements Based on Angular and Infrared Radiant Information

In order to improve capability of passive measurements, a novel approach is presented, which increase the medium wave and long wave infrared radiant information in the traditional bearings-only measurements equation. We explain the proposed mathematics model and modified covariance extend kalman filter algorithm in much detail in the full paper. Then the proposed model is used to estimate the position and velocity of aerial target by its angular information and infrared radiant information. Finally we give a simulation example. The results show that the passive measurements model proposed by us not only relax restriction of airplane motion, but also enhance the pace and precision of location, which looks promising for making passive measurements of position and velocity of target.