Summary of technical phd thesis: Research some solutions to improve the quality of signal receiver in radar

The study of technical solutions to improve the quality of the radar receiver through research to improve the quality of some modules in receiver in order to enhance sensitivity, reduce the phase noise, enhance stability and improve quality receiver signal of radar.
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Summary of technical phd thesis: Research some solutions to improve the quality of signal receiver in radarMinistry of EDUCATION AND TRAINING Ministry of Defence Academy of Military Science and Technology *********** HANH NGUYEN VAN RESEARCH SOME SOLUTIONS TO IMPROVE THE QUALITY OF SIGNAL RECEIVER IN RADAR. Speciality : Electronic Engineering Code : 62 52 02 03 SUMMARY OF TECHNICAL PHD THESIS HA NOI - 2014 ii The project was finished at:Academy of Military Science and Technology Scientific supervisors: 1. Dr. Minh Nguyen Thi Ngoc 2. Dr. Quang Chu Xuan1st Reviewer: Ass. Prof. Dr. Tu Hoang Tho, Military Technical Academy2nd Reviewer: Ass. Prof. Dr. Yem Vu Van, Hanoi University of Science and Technology3rd Reviewer: Dr. Hung Tran Van, Academy of Military Science and Technology The thesis is defended at the Council of Academy for thesisevaluation, meeting at the Academy of Military Science andTechnology on.......... 2014. Thesis can be found at: The Library of Academy of Military Science and Technology The National Library of Vietnam 1 INTRODUCTION* Urgency of topic: Upgrading and modernization of radar in our militaryequipment is one of the most important tasks of the offices working in researchand ensure technical for radar. At present, application of new technologycomponents and have a scientific basis to the existing radar station is the rightdirection and in accordance with the military situation. The need forimprovement and modernization radar in the Army is so great that the radar aremainly the older generation. Not only difficulty about supplies and technicalequipment which sources of information theory, technology, radar technologyfrom the former Soviet Union and Eastern Europe decreased significantly,from other countries is very limited. Military radar receiver compared to thecivil radar receivers have techniques to synthesize, complex and specificcharacteristics. Although it is not a new problem both in theory and fabricationtechnology, but related to the military secrets of the most developed countriesas well as the commercial product should be very difficult to reach and updatethe relevant documents. The quality of the receiver plays a crucial role in themanufacturing radar. So, the study found solutions to improve the quality ofthe radar receiver is a critical need and are practical in terms of our country isbuilding plan make radar.* The goal of the thesis: The study of technical solutions to improve thequality of the radar receiver through research to improve the quality of somemodules in receiver in order to enhance sensitivity, reduce the phase noise,enhance stability and improve quality receiver signal of radar.* Object and range of the study: The thesis is no mention at antenna andsignal processing, only limited research some technical solutions to improvethe quality of the module at the top of the most radar receiver in military(focused on microwave) and will focus on two main issues: 1. Researchsolutions to improve the quality of the receiver input protection of currentmilitary radar is to enhance sensitivity; 2. Research technical solutions toenhance stability and reduce the phase noise of radar receiver, namely: toenhance stability, reduce the phase noise of the VCO using one or more PhaseLock Loops (PLL). 2* Research method: Research method of the thesis is investigate and analyzeadvantages and disadvantages of the existing radar receiver, apply microwavecircuit theory, low noise receiver, the models and methods of phase noiseanalysis, technology selection and advanced techniques, using the ADSsoftware, the integrated circuit and modern instrumentation to synthesizestages need to improve quality. Then evaluation measured in the laboratoryand on the radar works in long time.* The science and practice significance:+ The science significance: The thesis focus research application of advancedmicrowave components, new technology solutions to improve the quality of themilitary radars receiver currently. This is a creative direction and in accordancewith the situation of the most equipment in our army currently.+ The practical significance: The results of theoretical research and empiricalof this thesis and is capable of practical application in the maintenance oftechnical assurance, longevity, improvements, upgrades existing radar andprograms catering to develop some new types of radar.* The structure of the thesis: The thesis consists 118 pages; including 14tables; 58 graphs, figures; 85 references ...