Abstract
Orthogonal frequency division multiplexing (OFDM)-based ground penetrating radar (GPR) has been proved to have a number of advantages. To improve the performance of a GPR system, time domain non-periodic autocorrelation (AC) of the transmitted OFDM signal should be designed to have similar shape to an ideal pulse. Challenge in OFDM signal design for GPR is that there is little pertinent literature and the design should be different from that in communication and air radar fields. In this paper, we propose a design scheme of OFDM signal with good AC for GPR. We divide the AC into main lobe and side lobe with proving that the main lobe is dominated with the functionality of the modulating amplitudes while the side lobe’s main function is modulating phases. Thus, modulating amplitudes and phases can be designed, respectively. Performance of this proposed approach is demonstrated by numerical examples. The results show that the designed OFDM signal yields a better AC and fewer false alarms for GPR systems.
Funding statement: Funding: The authors express their gratitude to the National Natural Science Foundation of China under grant nos 41390454, 61331005 and 61001039.
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©2015 by De Gruyter
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Articles in the same Issue
- Frontmatter
- A Triple-Band Monopole Planar Antenna for WLAN and WiMAX Applications
- Novel Compact Asymmetric Coplanar Strip (ACPS)-Fed Zeroth-Order Resonant Antennas with Bandwidth Enhancement
- A Wide Stop-Band Miniaturized Branch-Line Hybrid Coupler
- Using Microstrip LPF in Gysel Power Divider for Extreme Size Reduction and Higher Order Harmonic Suppression
- A Novel Compact UWB Bandpass Filter with Quad-Notched Bands Based on S-SCRLHs Resonator
- Space-Time-Coded Adaptive Spatial Modulation in Wireless MIMO Communication Systems
- A Unified Approach to Performance Analysis of Multihop Relay Fading Channels Using Generalized Gamma Model
- Bit Stream Recognition and Analysis in Cognitive Radio
- Improving Physical Layer Security via TAS and Full-Duplex Artificial-Noise-Added Receiver
- Design of OFDM Signal with Good Autocorrelation for Ground Penetrating Radar
- A New Microwave Asphalt Radar Rover for Thin Surface Civil Engineering Applications