A high-speed continuous wave GPR

In this work an innovative high speed continuous wave stepped frequency GPR has been designed and implemented with the aim of overcoming the low speed issue of wide bandwidth CW-SF GPRs. It is based on a structure combining a Digital Direct Synthesizer (DDS), a Phase Lock Loop (PLL) and a quadrature...

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Bibliographic Details
Main Authors: Parrini, F., Pieraccini, M., Atzeni, C.
Format: Conference Proceeding
Language:English
Subjects:
Amplitude modulation
Bandwidth
Boolean functions
CW-SF GPR
Data structures
DDS
Digital modulation
Frequency synthesizers
Ground penetrating radar
High-speed
Phase locked loops
Phase modulation
PLL
Quadrature modulator
SSB
UWB
Voltage-controlled oscillators
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Summary:In this work an innovative high speed continuous wave stepped frequency GPR has been designed and implemented with the aim of overcoming the low speed issue of wide bandwidth CW-SF GPRs. It is based on a structure combining a Digital Direct Synthesizer (DDS), a Phase Lock Loop (PLL) and a quadrature modulator (I/Q Modulator). The radar is an L-S band GPR able to scan a 1 GHz bandwidth (1500-2500 MHz) with 200 steps in 10 ms.