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Study and Simulation of Radar for Target Tracking System

RADAR is an electromagnetic system which operates by transmitting a particular type of waveform and extracts the target information such as its speed, distance, velocity etc. by processing the echo signal. RADAR system is outnumbered in use as compared to other contemporary technologies due to its flexibility in installation and use in any kind of environment, its stability and reliable operation throughout the mission phase. Among the many applications of RADAR system we chose to implement the target detection and tracking of desired and undesired objects around the user vicinity employing the RADAR fundamentals.

Basically the project is carried out in two phases. In the first phase the simulation of target detection procedure and in the next phase the simulation of target tracking procedure has been done. All the simulations have been done in MATLAB environment. For the target detection procedure the principle of frequency modulated continuous wave is employed and by the comparison of the transmitted and reflected signals the target is detected by its position or velocity. Here conventional FFT method is used to analyze the frequency spectrum of the compared output of transmitted and reflected signal.

For the tracking procedure the fixed gain filters such as αβγ Filter and Kalman Filter has been employed. This kind of filters estimates the target's position at any given time by using and manipulating all the previous data of the target. And by comparing the estimated and the measured results the filter adapts itself to give the optimum and best results of target’s position with minimum error. Here αβγ is a fixed gain filter whose gain remains fixed throughout the process whereas the gain of the Kalman Filter changes or adapts according to the error covariance matrix.


  • Sunil Puri
  • Sachin Bhandari
 

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