Improved Angular Tracking Accuracy in Phased Array Radar
Journal Title: روش های هوشمند در صنعت برق - Year 2019, Vol 9, Issue 33
Abstract
Monopulse is a technique which is used to detect radiation direction of waves. Radiation can be originated from active sources such as radar antennas, disturbances, etc., or passive sources, such as the reflector plates of an aircraft. Nowadays, monopulse technique has been used in many modern radar systems. In radar tracking accuracy, the criterion for evaluating the angulation function is the differential gradient. It needs to have accurate information about antenna dimensions and wavelengths. In this paper, the difference gradient value is normalized and can be completed with knowing the radiation pattern of the antenna without knowing wavelength and gate dimensions. Then, by choosing a four-horns feed, the feed is optimized based on the squint angle. The results indicate that in the whole functional range, the optimum squint angle has the least angular error. Simulations provide us with confidence in the superior performance of the radar tracker with an optimal squint angle for all target angles within the range of the pattern of monopulse radar.
Authors and Affiliations
Ehsan Asgari, Mojdeh Mahdavi, Ruhollah Hafezifard
Keywords
Related Articles
- EP ID EP567742
- DOI -
- Views 103
- Downloads 0
Investigation and improvement of high step- up converters for pv module applications
sun is of the clean and cheapest sources of energy. Charging slight energy to electricity is carried out by PV modules. Since most electric consumers need Ac input voltage, the PV modules output voltage should be changed...
Stability of nonlinear load electric arc furnaces in the presence of reactive power sources
This paper first discusses about Electric arc.the model used in this paper is a dynamic model shown with a differential equation. Then, this model is placed with power system model which is considered as a thevenin equiv...
A New Method for Segmentation of Multiple Sclerosis (MS) Lesions on Brain MR Images
Automatic segmentation of multiple sclerosis (MS) lesions in brain MRI has been widely investigated in recent years with the goal of helping MS diagnosis and patient follow-up. In this study we applied gaussian mixture m...
Robust Edge Detection Method with Subpixel Accuracy in Presence of Noise
Edge detection is one of the most important issues in image processing and machine vision. Edge detection in image processing is a low order process, so that the performance of the higher order processes such as object i...
Design and Implementation of a Web-based Greenhouse Remote Monitoring System with Zigbee Protocol and GSM Network
In modern and big greenhouses, it is necessary to measure several climate parameters to automate and control the greenhouse properly. Monitoring and transmitting by cable may lead to an expensive and stiff measurement sy...