Passive Location

Rapid positioning objectives is very important to the modem electronic warfare. Passive location has a characteristic of strong hidden, the role of distance, strong anti-interference ability as an important branch of positioning technology. Therefore, passive positioning technology is receiving increasing attention and I studied passive positioning in this paper.In this paper, we will learn about passive positioning technology's important theory and technology of this field which is used in positioning technology to the test, measuring the time difference location technology and Doppler frequency of poor positioning at the three-dimensional space. It also analysed the location of the test, measuring the time difference location, Doppler frequency of poor positioning, measuring the time difference to the joint position and DOA-DD joint position measurement technology.Finally, we carried out a simulation of MATLAB to test the performance of positioning technology's properties and we simulated direction-finding location methods and positioning accuracy map under the conditions of different of the layout station and different measurement error. By of these we work out a number of valuable theoretical and results of the simulation experimental.