In this paper we propose one possible approach how to apply the concept of multiple-input multipleoutput (MIMO) to monostatic Frequency Modulated Continuous Wave (FMCW) High-Frequency Surface Wave Radar (HFSWR) in a maritime environment. Common tasks for a HFSWR are sea-state monitoring and ship detection, where our focus is on ship detection. A limiting factor in HFSWR is the available bandwid...

In this paper a model to investigate the spectrum opportunities for cognitive radio networks in three radar frequency bands L, S and C at a specific location is introduced. We consider underlay unaware spectrum sharing model. The Secondary System we assume is an OFDM based system. The followed strategy is built upon defining a specific co or adjacent channel as a spectrum opportunity if -and on...

Detection statistics for a coherent laser radar are substantially different from those of a direct detection laser radar. Direct detection ladar detection statistics vary depending upon the detection mode (i.e., photon-counting vs. continuous direct detection). Speckle noise also impacts the detection statistics. For a single-pixel single-frequency single-polarization coherent detection transce...

Bistatic synthetic aperture radar (BiSAR), operates with separate transmitter and receiver that are mounted on different platforms (Cherniakov & Nezlin, 2007), will play a great role in future radar applications (Krieger & Moreira, 2006). BiSAR configuration can bring many benefits in comparison with monostatic systems, such as the exploitation of additional information contained in the bistati...

In the traditional transmitting beamforming radar system, the transmitting antennas send coherent waveforms which form a highly focused beam. In the multiple-input multipleoutput (MIMO) radar system, the transmitter sends noncoherent (possibly orthogonal) broad (possibly omnidirectional) waveforms. These waveforms can be extracted at the receiver by a matched filterbank. The extracted signals c...

Driven by the demand for massive and accurate sensing data to achieve wireless network intelligence under a limited available spectrum, coexistence between radar communication systems has attracted public attention. In this paper, we investigate novel dual-functional full-duplex relay aided radar-communication system where phased-array is employed at amplify-and-forward (AF) relay. A joint tran...

Atmospheric radar imaging techniques have shown promise in revealing the fine-scale structure of the atmosphere within the resolution volume of the radar. Enhanced resolution can be obtained in both angle and range by using spaced receivers and shifted frequencies, respectively. The distinct techniques have been termed coherent radar imaging (CRI) for angular resolution enhancement and range im...

Radar shadows are observed when an object that lies within the main beam of a radar transmitter screens a region of the detection space. Objects lying within the screened region, or shadow , reflect no energy back to the radar receiver. When a target screens a region of clutter, such as shown in Fig. 1, the probability of detecting the target may be increased by resolving the lower power return...

The Radar Remote Sensing Group in University of Cape Town has developed accurate modelling method that uses 3D maps of the Western Cape to predict the signal path loss between a transmitter, aircraft and a receiver in the Passive Coherent Location (PCL) system. The core objective of this thesis is to investigate the use of this modelling method to optimise the location of receivers in order to ...

due to increasing growth of air traffic, it is very important to have a reliable air traffic control system. usually secondary surveillance radar systems are employed for this task. in this paper, a new approach is presented to identify interrogators location of this system. the proposed method works passively and uses just a single receiver. this goal has been reached using angle and time diff...