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Leitlinien Unfallchirurgie
5. Auflage bestellen |
Leseprobe, Datei (800 KB)
Inhaltsverzeichnis, Datei (570 KB)
This dissertation demonstrates the implementation of ultra-wideband (UWB) radar sensors using commercial off-the-shelf electronics. The sensors are based on the correlation of binary pseudo noise sequences (M-sequences), combining low transmit power requirements with excellent noise and interference suppression.
A ranging system is introduced that is able to track moving objects with a standard deviation of 1.73mm at 2m range. Subsequently, a system is developed which can synchronize itself to a reference sequence with 1.96ps RMS jitter. This synchronization system uses an analog correlating control loop (delay lock loop) to achieve tracking of the reference to 0.38% of one chip.
The final application shown is a ground penetrating radar (GPR). The system is comprised of three elements: an FPGA, an output driver for the transmitter and a commercial analog-to-digital converter. Comparative measurements on buried pipes and cables prove that this system has achieved detection capability comparable to commercially available pulsed GPRs.
ISBN-13 (Printausgabe) | 9783736991927 |
ISBN-13 (E-Book) | 9783736981928 |
Sprache | Englisch |
Seitenanzahl | 158 |
Umschlagkaschierung | matt |
Auflage | 1. |
Erscheinungsort | Göttingen |
Promotionsort | Braunschweig |
Erscheinungsdatum | 29.01.2016 |
Allgemeine Einordnung | Dissertation |
Fachbereiche |
Elektrotechnik
Nachrichten- und Kommunikationstechnik |
Schlagwörter | ground penetrating radar, delay lock loop, synchronization, m-sequence, prbs |