Дисертації з теми "Frequency radar"
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Geladakis, Dimitrios N. "Comparison of the step frequency radar with the conventional constant frequency radars." Monterey, Calif. : Springfield, Va. : Naval Postgraduate School ; Available from National Technical Information Service, 1996. http://handle.dtic.mil/100.2/ADA328272.
Повний текст джерела"December 1996." Thesis advisor(s): Gurnam S. Gill. Includes bibliographical references (p. 45). Also available online.
Aytun, Alper. "Frequency diverse array radar." Thesis, Monterey, California. Naval Postgraduate School, 2010. http://hdl.handle.net/10945/5113.
Повний текст джерелаElectronic scanning is the most desirable feature of state-of-the-art radar systems. With electronic scanning, it is possible to steer the main beam of an array antenna instantaneously into a desired direction where no mechanical mechanism is involved in the scanning process. Electronic scanning methods including phase scanning, time delay scanning, and frequency scanning have been used in various radar applications; however new and cheaper scanning methods are still being investigated. It is the purpose of this thesis to investigate an array configuration called frequency diverse array (FDA), which gives rise to range-, time-, and angle-dependent scanning without using phase shifters. In this thesis, first, frequency diverse array as a time-modulated array is presented. A general analysis and the theory of time domain scanning is given. Equations derived for a time-modulated frequency diverse array are simulated using MATLAB. Amplitude tapering and Fourier series expansion is implemented in MATLAB and the results are provided for comparison. Secondly, analysis of a frequency diverse array is presented. Time-, range-, and angle-dependent electronic scanning is achieved by applying a small amount of frequency shift among the antenna elements. The simulation results for radiation patterns with various excitation types are given. Lastly, the radar applications of FDA are considered. The received power from a target at a fixed range is simulated in MATLAB and the results are presented.
Mun, Kok Leong. "Stepped frequency imaging radar simulation." Thesis, Monterey, Calif. : Springfield, Va. : Naval Postgraduate School ; Available from National Technical Information Service, 2000. http://handle.dtic.mil/100.2/ADA379137.
Повний текст джерелаBurger, Johann. "High frequency surface wave radar demonstrator." Master's thesis, University of Cape Town, 2018. http://hdl.handle.net/11427/29408.
Повний текст джерелаHeuschel, Eugene R. "Time-frequency, bi-frequency detector analysis of noise technology radar." Thesis, Monterey, California. Naval Postgraduate School, 2006. http://hdl.handle.net/10945/2636.
Повний текст джерелаMiddleditch, Andrew. "Spectral analysis in high frequency radar oceanography." Thesis, University of Sheffield, 2006. http://etheses.whiterose.ac.uk/3590/.
Повний текст джерелаAhmed, Atheeq. "Human Detection Using Ultra Wideband Radar and Continuous Wave Radar." Thesis, Linköpings universitet, Kommunikationssystem, 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-137996.
Повний текст джерелаJones, Aaron M. "Frequency Diverse Array Receiver Architectures." Wright State University / OhioLINK, 2011. http://rave.ohiolink.edu/etdc/view?acc_num=wright1323888275.
Повний текст джерелаPaulose, Abraham Thomas. "High radar resolution with the step frequency waveform." Thesis, Monterey, Calif. : Springfield, Va. : Naval Postgraduate School ; Available from National Technical Information Service, 1994. http://handle.dtic.mil/100.2/ADA284611.
Повний текст джерелаHuang, Jen-Chih. "The ambiguity function of the stepped frequency radar." Thesis, Monterey, Calif. : Springfield, Va. : Naval Postgraduate School ; Available from National Technical Information Service, 1994. http://handle.dtic.mil/100.2/ADA289533.
Повний текст джерелаThesis advisor(s): G. S. Gill. "September 1994." Includes bibliographical references. Also available online.
Kalkan, Yilmaz. "Target Localization Methods For Frequency-only Mimo Radar." Phd thesis, METU, 2012. http://etd.lib.metu.edu.tr/upload/12614805/index.pdf.
Повний текст джерелаTarget Localization via Doppler Frequencies - TLDF"
and it can be used for not only radar but also all frequency-based localization systems such as Sonar or Wireless Sensor Networks. Besides the TLDF method, two alternative target position estimation methods are proposed as well. These methods are based on the Doppler frequencies, but they requires the target velocity vector to be known. These methods are referred to as "
Target Localization via Doppler Frequencies and Target Velocity - TLD&
V methods"
and can be divided two sub-methods. One of them is based on the derivatives of the Doppler Frequencies and hence it is called as "
Derivated Doppler - TLD&
V-DD method"
. The second method uses the Maximum Likelihood (ML) principle with grid search, hence it is referred to as "
Sub-ML, TLD&
V-subML method"
. The more realistic signal model for ground based, widely separated MIMO radar is formed as including Swerling target fluctuations and the Doppler frequencies. The Cramer-Rao Bounds (CRB) are derived for the target position and the target velocity estimations for this signal model. After the received signal is constructed, the Doppler frequencies are estimated by using the DFT based periodogram spectral estimator. Then, the estimated Doppler frequencies are collected in a fusion center to localize the target. Finally, the multiple targets localization problem is investigated for frequency-only MIMO radar and a new data association method is proposed. By using the TLDF method, the validity of the method is simulated not only for the targets which are moving linearly but also for the maneuvering targets. The proposed methods can localize the target and estimate the velocity of the target with less error according to the traditional isodoppler based method. Moreover, these methods are superior than the traditional method with respect to the computational complexity. By using the simulations with MATLAB, the superiorities of the proposed methods to the traditional method are shown.
Kenny, Owen Patrick. "Theory of radar imaging using time-frequency distribution." Thesis, Queensland University of Technology, 1992. https://eprints.qut.edu.au/36211/6/36211_Digitised%20Thesis.pdf.
Повний текст джерелаAkhanli, Deniz. "Radar Range-doppler Imaging Using Joint Time-frequency Techniques." Master's thesis, METU, 2007. http://etd.lib.metu.edu.tr/upload/12608325/index.pdf.
Повний текст джерелаWarren, Craig. "Numerical modelling of high-frequency ground-penetrating radar antennas." Thesis, University of Edinburgh, 2009. http://hdl.handle.net/1842/4074.
Повний текст джерелаSvensson, Johan. "High Resolution Frequency Estimation in an FMCW Radar Application." Thesis, Linköpings universitet, Reglerteknik, 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-148526.
Повний текст джерелаTrevithick, Jacob D. "Millimeter Wave Radar Object Detection Through Frequency Selective Surfaces." DigitalCommons@CalPoly, 2019. https://digitalcommons.calpoly.edu/theses/2077.
Повний текст джерелаBailey, Eric Stanton. "Sparse Frequency Laser Radar Signal Modeling and Doppler Processing." University of Dayton / OhioLINK, 2010. http://rave.ohiolink.edu/etdc/view?acc_num=dayton1271937372.
Повний текст джерелаJones, William John. "Direct frequency synthesis using combined digital and analogue techniques." Thesis, University of Bradford, 1988. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.336118.
Повний текст джерелаCrescitelli, David M., and Patrick B. Kistner. "Enhanced detection of orthogonal radar waveforms using time-frequency and bi-frequency signal processing techniques." Thesis, Monterey, California. Naval Postgraduate School, 2008. http://hdl.handle.net/10945/3931.
Повний текст джерелаThis thesis investigates the periodic autocorrelation function (PACF) and periodic ambiguity function (PAF) for orthogonal continuous waveform (CW) modulations used in netted low probability of intercept (LPI) radar. Three orthogonal polyphase sequences and one frequency coding sequence are examined and their PACF and PAF characteristics are quantified. The Wigner-Ville distribution (WVD) and quadrature mirror filter bank (QMFB) timefrequency signal processing techniques and the cyclostationary bi-frequency technique (often used in non-cooperative intercept receivers) are used to detect the orthogonal CW signals and extract their parameters. The results shows that a combination of the techniques used were able to extract the basic signal parameters of bandwidth and code period from the polyphase waveforms and also the frequency hop slots and code length from the frequency coding sequence. The concept of using a swarm of unmanned aerial vehicles (UAV) is examined from the viewpoint of a coordinated group of netted intercept receivers in search of an LPI radar network.
Holder, Sade A. "Linear frequency modulated signals vs orthogonal frequency division multiplexing signals for synthetic aperture radar systems." Thesis, Monterey, California: Naval Postgraduate School, 2014. http://hdl.handle.net/10945/42647.
Повний текст джерелаThe goal of this thesis is to investigate the effects of an orthogonal frequency-division multiplexing (OFDM) signal versus a linear frequency modulated or chirp signal on simulated synthetic aperture radar (SAR) imagery. Various parameters of the transmitted signal, such as pulse duration, transmitted signal energy, bandwidth, and (specifically for the OFDM signal) number of subcarriers and transmission scheme were examined to determine which parameters are most important to reconstructing a SAR image. Matched filtering and interpolation are two techniques used to reconstruct the SAR image. SAR systems are used in various military and civilian sector applications. Some SAR application examples include ground surveillance, reconnaissance and remote sensing. These applications demand high resolution imagery; therefore, knowledge of exactly which parameters of the transmitted radar signal are more important in producing fine resolution imagery is worth investigating. This research will also aid in providing flexibility in terms of what type of signal and signal parameters are best suited for a particular SAR application and associated military missions. In addition to improving the method attaining high resolution images, SAR process improvement can potentially reduce military SAR system design cost.
Kistner, Patrick B. Crescitelli David M. "Enhanced detection of orthogonal radar waveforms using time-frequency and bi-frequency signal processing techniques." Monterey, Calif. : Naval Postgraduate School, 2008. http://edocs.nps.edu/npspubs/scholarly/theses/2008/Sept/08Sep%5FKistner.pdf.
Повний текст джерелаThesis Advisor(s): Pace, Phillip E. "September 2008." Description based on title screen as viewed on November 5, 2008. Includes bibliographical references (p. 115-116). Also available in print.
Middleton, Robert. "Techniques for homodyne dechirp-on-receive linearly frequency modulated radar." Thesis, University of St Andrews, 2011. http://hdl.handle.net/10023/1843.
Повний текст джерелаMa, Chung-Hsiu. "Stepped-frequency pulse train waveforms for improved radar range resolution." Thesis, Massachusetts Institute of Technology, 1996. http://hdl.handle.net/1721.1/41030.
Повний текст джерела"June 1996."
Includes bibliographical references (leaves 87-89).
The traditional approach of improving radar range resolution using a linear frequency modulated chirp signal requires the full width of the frequency spectrum, which is not feasible in the UHF band due to interference or frequency allocation for other purposes. In this study a linear frequency modulated chirp signal is approximated using two stepped-frequency pulse train waveforms, a continuous wave pulse train and a linear frequency modulated pulse train. The continuous wave pulse train consists of a series of single frequency pulses, each at a different frequency. It is found to be susceptible to corruption due to target motion. The linear frequency modulated pulse train consists of linear frequency modulation within pulses, each at a different center frequency. Simulations are used to demonstrate that both approaches approximate a linear frequency modulated chirp signal, and performance is degraded when there is a gap in the frequency band or if there is phase distortion due to target motion. However, it is shown that a linear frequency modulated pulse train with frequency overlaps between pulses can be used to reduce or eliminate phase distortions resulting from target motion provided the target is moving with constant velocity. The validity of the technique is demonstrated by non-coherently processing radar data from an internal moving target simulator and data from actual planes to resolve targets from their reflected image in order to estimate target height.
by Chung-Hsiu Ma.
S.B.and M.Eng.
Park, James. "Multi-Frequency Radar Signatures of Human Motion: Measurements and Models." The Ohio State University, 2012. http://rave.ohiolink.edu/etdc/view?acc_num=osu1354228912.
Повний текст джерелаGreen, Sean David. "Improving the range information of high frequency over-the-horizon skywave radar." Thesis, University of Sheffield, 1997. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.268265.
Повний текст джерелаPark, Joongsuk. "Development of microwave and millimeter-wave integrated-circuit stepped-frequency radar sensors for surface and subsurface profiling." Diss., Texas A&M University, 2003. http://hdl.handle.net/1969.1/1588.
Повний текст джерелаDelgado, Raymond R. "Mapping coastal surface winds in Monterey Bay using high frequency radar." Thesis, Monterey, Calif. : Springfield, Va. : Naval Postgraduate School ; Available from National Technical Information Service, 1999. http://handle.dtic.mil/100.2/ADA362924.
Повний текст джерела"March 1999". Thesis advisor(s): Jeffrey D. Paduan, Carlyle H. Wash. Includes bibliographical references (p. 121-122). Also available online.
Abd, Rashid Nur Emileen Binti. "Automatic vehicle classification in a low frequency forward scatter micro-radar." Thesis, University of Birmingham, 2012. http://etheses.bham.ac.uk//id/eprint/3018/.
Повний текст джерелаMetwally, Mohamed. "OFDM Coupled Compressive Sensing Algorithm for Stepped Frequency Ground Penetrating Radar." ScholarWorks @ UVM, 2014. http://scholarworks.uvm.edu/graddis/274.
Повний текст джерелаMoes, Henderikus Jan. "A low noise PLL-based frequency synthesiser for X-band radar." Thesis, Link to the online version, 2008. http://hdl.handle.net/10019/1337.
Повний текст джерелаClarke, Bryan Russell. "Frequency Modulated Continuous Waveform Radar for Collision Prevention in Large Vehicles." Thesis, The University of Sydney, 2015. http://hdl.handle.net/2123/14034.
Повний текст джерелаChang, Paul Chinling. "Near zone radar imaging and feature capture of building interiors." Columbus, Ohio : Ohio State University, 2008. http://rave.ohiolink.edu/etdc/view?acc%5Fnum=osu1197399599.
Повний текст джерелаStreed, Daniel H. "High-frequency meteorological phenomena observed with the Naval Postgraduate School's UHF Doppler Wind Profiler." Thesis, Monterey, California : Naval Postgraduate School, 1990. http://handle.dtic.mil/100.2/ADA243762.
Повний текст джерелаThesis Advisor(s): Nuss, Wendell A. Second Reader: Wash, C. H. "December 1990." Description based on title screen as viewed on March 30, 2010. DTIC Descriptor(s): Marine Meteorology, Meteorological Radar, Wind, Specifications, Comparison, Doppler Radar, Accuracy, Theses, Meteorological Data, Time, Short Range(Time), Reliability, Profiles, Scale, Data Acquisition, California, Inversion, Statistical Analysis, Meteorological Phenomena, Radiosondes, Schools, Ultrahigh Frequency, High Frequency, Contracts. DTIC Identifier(s): Wind Profilers. Author(s) subject terms: Doppler Wind Profiler, Wind Profiler, Doppler Radar. Includes bibliographical references (p. 115-117). Also available in print.
Kim, Kyung Cheol. "Calibration and validation of high frequency radar for ocean surface current mapping." Thesis, Monterey, Calif. : Springfield, Va. : Naval Postgraduate School ; Available from National Technical Information Service, 2004. http://library.nps.navy.mil/uhtbin/hyperion/04Jun%5FKim.pdf.
Повний текст джерелаBrinkman, Wade H. "Focusing ISAR images using fast adaptive time-frequency and 3D motion detection on simulated and experimental radar data." Thesis, Monterey, Calif. : Springfield, Va. : Naval Postgraduate School ; Available from National Technical Information Service, 2005. http://library.nps.navy.mil/uhtbin/hyperion/05Jun%5FBrinkman.pdf.
Повний текст джерелаThesis Advisor(s): Michael A. Morgan, Thayananthan Thayaparan. Includes bibliographical references (p. 119-120). Also available online.
Sova, Markus Gintas. "The sampling variability and the validation of high frequency radar measurements of the sea surface." Thesis, University of Sheffield, 1995. http://etheses.whiterose.ac.uk/12786/.
Повний текст джерелаEveraere, Etienne. "Polarimetry in Bistatic Configuration for Ultra High Frequency Radar Measurements on Forest Environment." Palaiseau, Ecole polytechnique, 2015. https://theses.hal.science/tel-01199522/document.
Повний текст джерелаDue to penetration capabilities of electromagnetic waves and the possibility to cover large areas, radar is one of the most appropriate tool for remote sensing of forest. To use radar images for forestry, it is crucial to select and optimize the best configurations of acquisition. If the frequency is too high, no penetration occurs and only the top leafs will play a role in the scattering events. Large wavelengths used in radar are more able to penetrate the forest elements and to interact also with the ground below. For this reason, we limit this thesis to the use of UHF, P-band and L-band. By emitting and receiving several couples of polarizations, several images can be collected. The polarimetry is sensitive the structure information and consequently, it can bring a diversity of information. A radar system which comprises a transmitter and receiver which are spatially separated is an opportunity to supply additional information to classical polarimetric radar, because it breaks symmetry observed in the monostatic case. The aim of the thesis is to anticipate real P-band bistatic radar measurements on forest and to give keys to choose more appropriate configuration for a given application: physical parameter retrieval or target detection. The solution we propose is to construct an optical scale device that is full polarimetric and that handle the bistatic configurations, and to measure scene having a structure comparable to a real forest. We demonstrate that the optical scale measurement can be used to anticipate polarimetric behavior of forest and jointly to validate our simulation code. Polarization and configuration are studied to discriminate branch orientation and to detect man-made objects in the forest
Haider, Ammar. "Design of a metal detector." Thesis, Högskolan i Gävle, Avdelningen för elektronik, matematik och naturvetenskap, 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:hig:diva-26452.
Повний текст джерелаPichler, Markus. "Phase-locked-loop-based signal synthesis for frequency-modulated continuos wave radar /." Linz : Trauner, 2008. http://opac.nebis.ch/cgi-bin/showAbstract.pl?u20=9783854993889.
Повний текст джерелаBrooks, William Allen. "Ultra-wideband radar transient signal detection using time-frequency and wavelet transforms." Thesis, Monterey, Calif. : Springfield, Va. : Naval Postgraduate School; Available from the National Technical Information Service, 1992. http://edocs.nps.edu/npspubs/scholarly/theses/1992/Dec/92Dec_Brooks.pdf.
Повний текст джерелаMoraitakis, Ioannis. "Feature extraction of intra-pulse modulated radar signals using time-frequency analysis." Thesis, Monterey, Calif. : Springfield, Va. : Naval Postgraduate School ; Available from National Technical Information Service, 1999. http://handle.dtic.mil/100.2/ADA371390.
Повний текст джерела"September 1999". Thesis advisor(s): Monique P. Fargues, Ralph D. Hippenstiel. Includes bibliographical references (p. 103-104). Also Available online.
Loza, Artur. "Image processing and time-frequency transform methods for radar characterisation and recognition." Thesis, University of Bristol, 2006. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.500445.
Повний текст джерелаSchmid, Robert L. "High-frequency silicon-germanium reconfigurable circuits for radar, communication, and radiometry applications." Diss., Georgia Institute of Technology, 2014. http://hdl.handle.net/1853/54838.
Повний текст джерелаKabutz, Marten Herbert. "RF hardware design of a stepped frequency continuous wave ground penetrating radar." Master's thesis, University of Cape Town, 1995. http://hdl.handle.net/11427/18227.
Повний текст джерелаResearch into stepped frequency continuous wave ground penetrating radar (SFCW GPR) at UCT has been carried out since 1990. A first generation system comprising of Hewlett-Packard test equipment controlled by a PC was assembled. Cavity-backed log spiral antennas were designed and built by the University of Stellenbosch for the specific use of ground penetrating radar. Measurements with the first generation system proved the concept of SFCW GPR and thus a dedicated second generation system was planned. A SFCW GPR system was designed to replace the first generation system. Various designs for transmitter and receiver configurations were investigated and those found most suitable were used for the implementation. The SFCW radar consists of a wideband CW transmitter and a coherent receiver. A 300-1000 MHz transmitter was constructed using varactor-tuned oscillators as frequency sources. A double-sideband, low-IF receiver was constructed for the 300- 1000 MHz signal, to mix it to an IF of 10.7 MHz and I-Q demodulate it. The transmitter was found to operate according to specifications. The receiver was found to operate satisfactorily, but the dynamic range was less than expected. A limiting problem encountered in the first generation GPR was the large direct coupling signal from the transmitter into the receiver. This large signal reduced the effective receiver dynamic range. A method of cancelling this large direct coupling signal was implemented, using a bi-phase modulator to generate the cancelling signal in antiphase to the coupling signal. A 20 dB reduction in coupling was shown. The system was used to measure cable lengths to within the inherent accuracy of the system. A metal plate target was detected by the system feeding two antenna and a concrete floor was detected under 1 m of sand. It was thus shown that the SFCW system could be used as a second generation GPR.
Edman, Sebastian. "Radar target classification using Support Vector Machines and Mel Frequency Cepstral Coefficients." Thesis, KTH, Optimeringslära och systemteori, 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-214794.
Повний текст джерелаI radar applikationer räcker det ibland inte med att veta att systemet observerat ett mål när en reflekted signal dekekteras, det är ofta också utav stort intresse att veta vilket typ av föremål som signalen reflekterades mot. Detta projekt undersöker möjligheterna att utifrån rå radardata transformera de reflekterade signalerna och använda sina mänskliga sinnen, mer specifikt våran hörsel, för att skilja på olika mål och också genom en maskininlärnings approach där med hjälp av mönster och karaktärsdrag för dessa signaler används för att besvara frågeställningen. Mer ingående avgränsas denna undersökning till två typer av mål, mindre obemannade flygande farkoster (UAV) och fåglar. Genom att extrahera komplexvärd radar video även känt som I/Q data från tidigare nämnda typer av mål via signalbehandlingsmetoder transformera denna data till reella signaler, därefter transformeras dessa signaler till hörbara signaler. För att klassificera dessa typer av signaler används typiska särdrag som också används inom taligenkänning, nämligen, Mel Frequency Cepstral Coefficients tillsammans med två modeller av en Support Vector Machine klassificerings metod. Med den linjära modellen uppnåddes en prediktions noggrannhet på 93.33%. Individuellt var noggrannheten 93.33 % korrekt klassificering utav UAV:n och 93.33 % på fåglar. Med radial bas modellen uppnåddes en prediktions noggrannhet på 98.33%. Individuellt var noggrannheten 100 % korrekt klassificering utav UAV:n och 96.76% på fåglar. Projektet är delvis utfört med J. Clemedson [2] vars fokus är att, som tidigare nämnt, transformera dessa signaler till hörbara signaler.
Chauhan, Ruchir. "A Platform for False Data Injection in Frequency Modulated Continuous Wave Radar." DigitalCommons@USU, 2014. https://digitalcommons.usu.edu/etd/3964.
Повний текст джерелаFrost, Shaun W. "Performance Analysis of Radar Waveforms for Congested Spectrums." Wright State University / OhioLINK, 2011. http://rave.ohiolink.edu/etdc/view?acc_num=wright1323183379.
Повний текст джерелаGreen, Ryan K. "Scaled Synthetic Aperture Radar System Development." DigitalCommons@CalPoly, 2015. https://digitalcommons.calpoly.edu/theses/1498.
Повний текст джерелаSeybert, Audrey, Jay Fuller, and Bryan Townley. "Detect Sense and Avoid Radar for UAV Avionics Telemetry." International Foundation for Telemetering, 2011. http://hdl.handle.net/10150/595802.
Повний текст джерелаThis paper describes the development and test results of a Frequency Modulated Continuous Wave (FMCW) L-Band radar testbed designed to detect obstacles in the proximity of an Unmanned Aerial Vehicle (UAV). From laboratory loopback tests, it was calculated that with pulse compression and a transmit power of 150 mW (22 dBm), the radar is capable of detecting an object with a 0.014-m2 radar cross-sectional area at ranges between 500 ft to 1 mi. Analysis shows that post processing of the collected data would reveal information about the obstacle such as its range and location relative to the aircraft. Design and testing procedures are discussed.
Eriksson, Oscar. "Filterdesign och hårdvarukonstruktion för FMCW-radar." Thesis, Linköping University, Department of Electrical Engineering, 2007. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-7988.
Повний текст джерелаDen här högskoleavhandlingen beskriver designen av ett IF-filter samt hårdvarukonstruktion av en ny 77 GHz FMCW-radar demonstrator. Syftet med demonstratorn är att illustrera hur kisel germanium-, SiGe, teknologi kan användas istället för den mer vedertagna men dyrare gallium arsenik-, GaAs, teknologin. Den gamla radar-prototypen vilken Acreo AB utvecklat är funktionell men behöver konstrueras om för att bättre kunna utvärdera radarprestandan. I avhandlingen presenteras grundläggande radarteori och ekvationer för att underlätta förståelsen av de olika systemblocken. Rapporten beskriver också systemarkitekturen och hur dess funktionalitet kommer att testas. Det omdesignade IF-filtret har simulerats i en PSpice-simulator och ett prototypkort av detta har tillverkats för mätningar. Ett 4-lagers kretskort av hela systemet har tagits fram i Orcad Layout. Slutligen innehåller rapporten förslag på förbättringar till nästa demonstratorversion.
This bachelor thesis describes the design of an IF-filter and the hardware construction of a new version of a 77 GHz FMCW-radar demonstrator. The purpose of the demonstrator is to illustrate how the silicon germanium-, SiGe, technology could be used instead of the more conventional but also much more expensive gallium arsenide-, GaAs, technology. The old radar prototype that Acreo AB has developed is fully functional but needs to be redesigned to be able to evaluate the radar performance in a better way. The thesis presents the basic radar theory and equations to help understanding the construction of the system blocks. The report also describes the system architecture and how its functionality should be tested. The redesigned IF-filter has been simulated in a PSpice simulator and a prototype has been manufactured and measured. A 4-layer PCB-board of the whole system was done in Orcad Layout. Finally the report is concluded with suggestions on improvements for the next demonstrator version.