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Algorithms Development for Emitter-location Determination Using Un-directional Antennas

تطوير خوارزمية لتحديد موقع مرسل لاسلكي باستخدام الهوائيات غير الموجهة

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 Publication date 2016
and research's language is العربية
 Created by Shamra Editor




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This work discusses the feasibility of applying a small and inexpensive GPS, a Field Strength Meter (FSM) and a personal computer, that can activity and rapidly determine the Geo-locations of RF cooperated emitter, which have a wide range of both military and civilian applications. The emitter’s Geo-coordinates can be estimated by a single moving observation system, which receives signals from the emitter, and measures his Geo-locations and Field Strengths of the transmitted signal at four Positions Analytic Formulas are derived to calculate the location of Emitter, which detected from four Positions by using of Linear Algebra or pseudo range’s solution, The MATLAB was used to solve the four Equations and to simulate the Geo-Positions on Geo-Map.

References used
SCERRI, P. , GLINTON, R. , SCERRI, D. , and SYCARA, K. Geo-location of RF Emitters by Many UAVs , American Institute of Aeronautics and Astronautics , 2008 , p.13
FOWLER, M., Analysis of Passive Emitter Location with Terrain Data, IEEE Transactions on Aerospace and Electronic Systems, AES-37 (April 2013), 495-507
RAN REN MARK, L. FOWLER and N. EVA WU. Finding Optimal Trajectory Points for TDOA/FDOA Geo-Location Sensors, State University of New York at Binghamton , 2009 , pp: 6
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يبين المشروع كيفية تصميم نموذج باستخدام أدوات التحليل المكاني (spatial Analysis) المتاحة في برامج نظم المعلومات الجغرافية لاختيار أفضل المواقع لإنشاء منشأة سياحية في محافظة طرطوس, ثم قمنا بتخصيص معاملات إدخال للنموذج لكي يتم تطبيقه على مناطق مختلفة ب استخدام بيانات إدخال مختلفة ليتمكن مستخدمو النموذج ببساطة من إدخال المعاملات الخاصة بهم في منطقتهم دون الحاجة إلى معرفة كثير من المعلومات حول واقع عمل النموذج، وتكمن أهمية المشروع من خلال تقديم نموذج كامل باستخدام باني النماذج (ModelBuilder) ضمن برنامج ArcGIS لاختيار أفضل موقع لمنشأة سياحية تحقق مجموعة من المعايير، وتقديم واجهة مستخدم لوضع البيانات الضرورية مباشرة, وسيتم تحقيق هذه الأهمية من خلال مجموعة من الأهداف نستعرضها فيما يلي : • دراسة نظرية لنظم المعلومات الجغرافية (GIS) والتحليل المكاني حيث سنعرض مقدمة تبين أهمية برنامج ArcGIS وأدوات التحليل المكاني المتوفرة ضمن بيئة نظم المعلومات الجغرافية والتي اعتمدنا عليها لإنشاء النموذج المطلوب. • دراسة نظرية لباني النماذج (ModelBuilder) ضمن برنامج ArcGIS، ثم سنستعرض فوائد النموذج وضبط إعداداته وبنائه بخطوات متكاملة. • تطبيق منهجية التحليل المكاني باستخدام GIS)) وبناء نموذج لاختيار أفضل موقع لمنشأة سياحية تحقق مجموعة من المعايير في منطقة الدراسة، ذلك بالاعتماد على البيانات المتوفرة واشتقاق بيانات جديدة تساهم في إتمام عملية بناء النموذج، وتحديد المعاملات اللازمة التي ستظهر في واجهة المستخدم المطلوبة لاختيار الموقع الأفضل.
The field of different variants of dipole and loop antennas is studied. The amplitude and phase of the antennas wire current in near-field zone are calculated by numerical method using integral equation. The main regularity in distributions of amp litude and phase in near-field zone and transmission coefficient between two antennas in three-element antenna array are analyzed.
This article presents a new method of Direction Of Arrival (DOA) estimation technique using Multiple Signal Classification ( MUSIC ) algorithm. This method is applied to communication signals that work in broadband frequency by using a single RF port of Broad-Band ESPAR Antenna, with eight parasitic radiators (BB-ESPAR-8).
Snobar River is the basic water resource system in Snobar watershed (268.8 km2), which empties into the Mediterranean sea 10 kilometers south of Lattakia. We must find out advanced management to face of the recent serious conflicts such as climate ch anges. Modeling is adopted as appropriate tool to achieve this object. This study uses the software package WEAP21 (Water Evaluation and Planning System), which is specifically designed to evaluate and plan the water resources. We suggest two scenarios to carry out the weaping Snob arriver basin: the first includes new irrigation techniques, the second includes extended dry climate. The study has shown that demand site coverage reaches to 100%, but the river dries in the downstream of Athwart reservoir. We economize on water by suggestion a dripping irrigation technique (59%). Water year method and extended dry climate scenario declare the likely dangerous effects of climate changes.
The graph-theoretical thickness (shortly thickness)of graph G, denoted by Φ(G), is the minimum number of planar subgraphs into which the graph can be decomposed, and a graph that can be drawn in the plane without any of its edges intersecting is c alled a planar graph. determining the thickness of a given graph is known to be an NP-complete problem. In this paper we introduce an application heuristic algorithm for determining the thickness. Our algorithm is based on simulated annealing optimization scheme which provide the results of the New-thick (1). We show that the simulated annealing is a efficient method to obtain good approximation for the thickness when the number vertices are at most 30 otherwise it is slower. Finally, we apply this algorithm on the heuristic algorithm Newthick and we show that the algorithm produces a good approximation and optimization solution for the thickness, and we program this algorithm with C++, and running it by laptop has RAM 2GB and CPU 2.27GHZ.
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