According to the characteristic of the passive location system and the signal structure of GSM and CDMA system,the key parameter of passive location using GSM and CDMA system for low-altitude flying target was analyzed.

Measuring approach of flying target landing parameters based on binocular vision model;

Study on measuring approach of flying target landing parameters based on binocular vision model

A new algorithm of the real-time target motion parameter estimation and tracking is proposed to overcome the limitation of the real-time motion parameter estimation of the flying target based on pseudo linear estimation(PLE).

In order to detect the low altitude targets,the method for passive bearing estimation with acoustic vector sensors was presented.

The performance of the proposed method is described,followed by experimental investigation with noise data radiated by low altitude target.

This paper discusses the issue of low altitude target tracking based on interacting multiple model (IMM),analyzes the motion features of low altitude target,provides three motion models,including rectilinear motion at constant velocity,rectilinear motion at constant acceleration and curvilinear motion.

In the context of tracking low elevation targets with radar,the multipath propagation would cause acute errors in the elevation angle measurement of the targets.

In the context of tracking low elevation targets with radar, the multipath effects cause big errors in the measurement of the elevation angle, and the traditional tracking algorithm based on Kalman filter also leads to great tracking errors.