جستجوی مقالات مرتبط با کلیدواژه "رادار" در نشریات گروه "مکانیک"

The Kalman filter is a set of mathematical equations that is a computationally efficient tool for estimation. It provides us with the process status, in this way, it minimizes the mean square error. In some applications, this filter is very strong, it supports the past situation as well as the present and future situation. This mode is accurate for when the system model is also uncertain. The Kalman filter guides general problems trying to estimate the state x so that the discrete-time process is linearly controlled by a stochastic differential equation. The purpose of this article is to correctly track the target used in a radar with the help of the Kalman filter technique and MATLAB. The result of the implementation has been analyzed and planned for flight system maneuvers using a simulated target.

In this research, a model for detecting targets and classifying the pulses received by the 6-antenna radar system using artificial neural networks optimized by genetic algorithm is presented. The proposed model consists of two main parts: clustering and classification. In the clustering process, the different pulses received by each of the radar antennas are clustered in such a way that the pulses of each target are placed in the cluster of the same target, and finally the results of clustering with different algorithms are evaluated by Dunn index. In the classification process, using the neural network, the target angle is predicted, the characteristics of which are received by the antennas, and the weights and biases of the neural network are optimized by a genetic algorithm. To adjust the parameters, Taguchi method has been used to select the best values of the parameters and the neural network has been trained with these values, and as a result, the accuracy of predicting the received pulse angle has increased to 98.55%.

Research on radio equipment and remote control with unprecedented speed being done, above all, too many applications off this technology in the arena military has made the governments do huge investments in this sector. Despite a good performance and very high achievements of electromagnetic radiation, if not control very dangerous for human and irreversible effects it will have its effects will remain even after thousands of years.
A variety of telecommunication and communication equipment such as mobile phones, communication device and etc. that emits electromagnetic waves with biological tissues they will create a change such as electronic burn. naturally The use of this equipment to endanger life, because electromagnetic waves from passing any object and then exit it after creating wastes that are very harmful.