The application of CCD frame-transfer sensor to the performance test of angle tracking system of radar

1990 ◽  
Author(s):  
Gangqiang Huang
Keyword(s):  
Performance Test ◽  
Tracking System ◽  
Angle Tracking

Design, Development and Performance Test of Two-Axis Solar Tracker System

2014 ◽  
Vol 704 ◽  
pp. 350-354
Author(s):  
Muhammad Ikram Mohd Rashid ◽  
Nik Fadhil bin Nik Mohammed ◽  
Suliana binti Ab Ghani ◽  
Noor Asiah Mohamad
Keyword(s):  
Tilt Angle ◽  
Solar Collector ◽  
Performance Test ◽  
Tracking System ◽  
Electrical Power ◽  
Solar Thermal ◽  
The Sun ◽  
Solar Pv ◽  
Design Development ◽  
Solar Tracking

The energy extracted from photovoltaic (PV) or solar thermal depends on solar insolation. For the extraction of maximum energy from the sun, the plane of the solar collector should always be normal to the incident radiation. Sun trackers move the solar collector to follow the sun trajectories and keep the orientation of the solar collector at an optimal tilt angle. Energy efficiency of solar PV or solar thermal can be substantially improved using solar tracking system. In this paper, an automatic solar tracking system has been designed and developed using DC motor on a mechanical structure with gear arrangement. The movements of two-axis solar trackers for the elevation and azimuth angles are programmed according to the mathematical calculation by using the Borland C++ Builder. Performance of the proposed system over the important parameter like solar radiation received on the collector, maximum hourly electrical power has been evaluated and compared with those for fixed tilt angle solar collector.

scholarly journals Dual axis solar angle tracking system without any sensor

2018 ◽  
Vol 2 (3) ◽  
pp. 127-136 ◽  
Author(s):  
Zuhal Er ◽  
Elif Balcı
Keyword(s):  
Tracking System ◽  
Angle Tracking ◽  
Solar Angle

scholarly journals Optimum range of angle tracking radars: a theoretical computing

2019 ◽  
Vol 9 (3) ◽  
pp. 1765 ◽  
Author(s):  
Sadegh Samadi ◽  
Mohammad Reza Khosravi ◽  
Jafar A. Alzubi ◽  
Omar A. Alzubi ◽  
Varun G. Menon
Keyword(s):  
Closed Form ◽  
Optimization Problem ◽  
Tracking System ◽  
Total Error ◽  
Optimal Range ◽  
The Past ◽  
Simple Simulation ◽  
Simulation Based ◽  
Angle Tracking ◽  
Theoretical Computing

In this paper, we determine an optimal range for angle tracking radars (ATRs) based on evaluating the standard deviation of all kinds of errors in a tracking system. In the past, this optimal range has often been computed by the simulation of the total error components; however, we are going to introduce a closed form for this computation which allows us to obtain the optimal range directly. Thus, for this purpose, we firstly solve an optimization problem to achieve the closed form of the optimal range (Ropt.) and then, we compute it by doing a simple simulation. The results show that both theoretical and simulation-based computations are similar to each other.

Design of a Solar Tunnel Dryer Combined Heat with a Parabolic Trough for Paddy Drying

2016 ◽  
Vol 851 ◽  
pp. 239-243 ◽  
Author(s):  
Krissadang Sookramoon
Keyword(s):  
Heat Exchanger ◽  
Performance Test ◽  
Focal Point ◽  
Tracking System ◽  
Cross Flow ◽  
Hot Water ◽  
Parabolic Trough ◽  
Tunnel Dryer ◽  
And Performance ◽  
Flat Plate Collector

This paper presents the design, build and performance test of a solar tunnel dryer combined heat with a parabolic trough for paddy drying. A 2.27 m² parabolic trough stainless steel made with a single-axis solar tracking system produced hot water and delivered to the cross flow heat exchanger equipped with a solar tunnel dryer with the size of flat plate collector of 2.112 m2. The system received solar radiation and reflected sunlight to the receiver at the focal point of a parabolic trough. At this point, a copper heat pipe with the inside diameter of 25.4 mm for water heating is placed. A parabolic trough is covered with plastic sheets for protecting the wind in order to prevent the heat loss by convection. The produced hot water is used to warm the air and is sent to the heat exchanger and the blower passes hot air through the drying chamber of solar tunnel to dry paddy. The average drying temperature was 57.73 °C. The paddy moisture content was assessed in a reduction from 49.96 to 15.61 MC (% d.b.) in 6 hours. The heated air was around 245.87 W, with the incoming heat in the solar tunnel dryer of 1271.84 W. The thermal efficiency of a solar tunnel dryer, a parabolic trough, and the overall efficiency were on the average of 28.31%, 8.73%, and 3.80%, respectively.

HIGH RESOLUTION MONOPULSE RADAR TRACKING SYSTEM

1992 ◽  
Vol 02 (04) ◽  
pp. 305-321
Author(s):  
Y.A. ALSAKA ◽  
L.A. YOUNG ◽  
M. HAMID
Keyword(s):  
High Resolution ◽  
Cross Sections ◽  
Tracking System ◽  
Error Function ◽  
Geometric Center ◽  
Radar Cross Sections ◽  
High Resolution Radar ◽  
Angle Tracking ◽  
Crosscorrelation Function ◽  
Frequency Pulse

High resolution radar techniques are applied to the problem of resolving a multiple target array and locating its geometric center without the usual biasing toward the brightest scatterer. This result is accomplished using monopulse radar techniques combined with high resolution stepped frequency pulse train signal processing in an angle tracking noncoherent high resolution radar. The center of each uniquely separated pair of point targets is calculated by examining the crosscorrelation function of the sum and difference channels. The autocorrelation of the sum channel is used to normalize the crosscorrelation data thereby eliminating the effects of the different targets’ radar cross sections (RCS). The zero separation term of the error function (dc term) remains biased toward the bigger scatterer, even after normalization. The nonzero terms (ac terms) are the cross range distances from the antenna’s boresight to each scatterer and are independent of their RCS. By simply dropping the zero separation term and averaging the remaining terms together, the aimpoint becomes the unbiased geometric center of the array.

scholarly journals Modeling and Simulation for the Investigation of Radar Responses to Electronic Attacks in Electronic Warfare Environments

2018 ◽  
Vol 2018 ◽  
pp. 1-13 ◽  
Author(s):  
So Ryoung Park ◽  
Ilku Nam ◽  
Sanguk Noh
Keyword(s):  
Electromagnetic Wave Propagation ◽  
Tracking System ◽  
Characteristic Parameters ◽  
Tracking Errors ◽  
Electronic Warfare ◽  
Input Section ◽  
Simulation Scenario ◽  
Deceptive Jamming ◽  
Set Up ◽  
Angle Tracking

An electronic warfare (EW) simulator is presented to investigate and evaluate the tracking performance of radar system under the electronic attack situations. The EW simulator has the input section in which the characteristic parameters of radar threat, radar warning receiver, jammer, electromagnetic wave propagation, and simulation scenario can be set up. During the process of simulation, the simulator displays the situations of simulation such as the received signal and its spectrum, radar scope, and angle tracking scope and also calculates the transient and root-mean-squared tracking errors of the range and angle tracking system of radar. Using the proposed EW simulator, we analyze the effect of concealment according to the noise and signal powers under the noise jamming and also analyze the effect of deception by calculating errors between the desired value and the estimated one under the deceptive jamming. Furthermore, the proposed EW simulator can be used to figure out the feature of radar threats based on the information collected from the EW receiver and also used to carry out the electronic attacks efficiently in electronic warfare.

scholarly journals Performance test and verification of an off-the-shelf automated avian radar tracking system

2017 ◽  
Vol 7 (15) ◽  
pp. 5930-5938 ◽  
Author(s):  
Roel May ◽  
Yngve Steinheim ◽  
Pål Kvaløy ◽  
Roald Vang ◽  
Frank Hanssen
Keyword(s):  
Performance Test ◽  
Tracking System ◽  
Radar Tracking

Robust command filtered control for course tracking of ships under actuator dynamics with input magnitude and rate saturation

2021 ◽  
pp. 147509022110522
Author(s):  
Qijia Yao
Keyword(s):  
Control Strategy ◽  
Disturbance Observer ◽  
Closed Loop ◽  
Tracking System ◽  
Tracking Error ◽  
Small Region ◽  
Great Difficulty ◽  
Environmental Disturbances ◽  
Actuator Dynamics ◽  
Angle Tracking

This article investigates the course tracking of ships subject to parametric uncertainties and environmental disturbances. Particularly, the actuator dynamics with input magnitude and rate saturation is also considered. When including the actuator dynamics, the ship course tracking system becomes a mismatching system, which brings a great difficulty to the control design. A novel robust command filtered control strategy is presented by incorporating a disturbance observer and an auxiliary anti-saturation system into the command filtered backstepping control architecture. The disturbance observer is designed to compensate for the mismatched lumped disturbance. The auxiliary anti-saturation system is introduced to tackle the effects of input magnitude and rate saturation. It is strictly proved that all the closed-loop error signals under the proposed controller are uniformly ultimately bounded and the course angle tracking error can converge to the adjustable small region around the origin. Moreover, the proposed controller is computationally simple and has the strong robustness against uncertainties and disturbances. The effectiveness and advantages of the proposed control strategy are verified through simulations and comparisons.

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