In vertical radar profiling (VRP), the receiver antenna is located within a borehole while the transmitter antenna is placed at varying offsets from the borehole. VRP surveys are primarily used to reconstruct subsurface georadar velocities by inverting direct-wave traveltimes. We examine the VRP technique and associated concepts that need to be considered when acquiring, analyzing and interpret...

The main focus of this work concerned with the development of integrated electronic and optoelectronic circuits and devices for pulsed time-of-flight laser rangefinding is on the construction of the receiver channel, system level integration aimed at realisation of the laser radar module and in integration of all the receiver functions of laser radar on one chip. Since the timing discriminator ...

Compressive sensing (CS) provides a new paradigm in data acquisition and signal processing for radar. In this work, we investigate the performance of several deterministic waveforms for the basic problem of range-only estimation in CS-radar system. We investigate the effects of a digital RF system from signal generation at the transmitter, to sparse signal recovery at the receiver, on the incoh...

In this paper, we address the design problem of throughput and energy-efficient Medium Access Control (MAC) in wireless sensor networks. First, we assume a static network model with a fixed assignment of disjoint transmitter and receiver node groups. To obtain reliable channel feedback in multi-destination sensor networks, we propose the Group TDMA algorithm to separate in time distinct transmi...

Ground-penetrating radar (GPR) technology finds applications in many areas such as geophysical prospecting, archaeology, civil engineering, environmental engineering, and defence applications as a non-invasive sensing tool [3], [6], [18]. One key component in any GPR system is the receiver/transmitter antenna. Desirable features for GPR antennas include efficient radiation of ultra-wideband pul...

Different interleavers are employed in Interleave Division Multiple Access (IDMA) instead of using different signatures as in a conventional code-division multiple-access (CDMA) scheme. Multiple Input Multiple Output (MIMO) system exploits multiple antennas at transmitter and receiver to mitigate the fading effect. To offer the promising communication beyond 3G and 4G wireless communication, ID...

We designed, built, and demonstrated a novel OCDMA multi code transmitter and receiver capable of a Gigabit operation, runs error free with a capability of a bit-to-bit code swapping using fast wavelength-hopping time-spreading OCDMA codes. BER less than 10 was measured and no error floor was observed. By implementing optical layer XOR, our novel transmitter/receiver pair enables One-time Pad d...

The interest in biand multistatic radar has been growing over the last years as they offer various advantages. For instance the transmitter and receiver can be easily be separated and therefore the survivability can be enhanced by deploying the transmitter further away from the scene. Even the possibility of a forward looking synthetic aperture radar can be realised. Bistatic radar can provide ...