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The feasibility of Forward Scatter Radar (FSR) that exploits pulsars as transmission sources for the purpose of air targets detection is examined. We theoretically calculated the power budget for air target detection using such a FSR system with the higher-gain radio telescopes used as receivers. The numerical results are obtained for three known radio telescopes and three pulsars.
In this paper, we conduct an experimental study with the aim to obtain a large number of estimates of various parameters characterizing the GPS shadows created by three types of moving vehicles. The experimental cars have a similar size and therefore, the obtained estimates have similar values. From the results, it can be seen that the cars can be differentiated by means of their shadow parameters.
In this paper we research one joint structure of the CFAR detector and a parameter estimation of the moving different marine targets at the background of a sea clutter using Bistatic Forward Scatter Radar (FSR) system. In our investigates we use the two pulse MTI CFAR processor with K/M-L batch processor and parameter estimator for a marine target with unknown size are investigated on the base of...
In this paper, we address a technique and related algorithms for precise detection, parametric imaging and classification of small marine targets in a harsh sensing environment attributed for heavy sea clutter via noncooperative processing of the GPS-based Forward Scatter Radar (FSR) data. In contrary to GPS L5 detection approach, the proposed technique utilizes civil GPS L1 signal formats in FSR...
In this work Bistatic Inverse Forward Scattering Inverse Synthetic Aperture Radar (BFISAR) concept is addressed. Geometric description of BFISAR topology with stationary transmitter and receiver, and moving target is given. Kinematic vector equations are derived. Mathematical model of BFISAR signal with linear frequency modulation (LFM) is described. It is proved that BFISAR signal formation and image...
The aim of this article is to test the effectiveness of the known CFAR processors in order to detect moving targets in the frequency domain of real records. The purpose is to be chosen optimal CFAR detector for moving target detection. The data are obtained by portable, surveillance, Frequency Modulated Continuous Wave (FMCW) radar with Low probability of Intercept (LPI). In the paper are studied...
Based on theoretical methods for synthesis of complementary signals briefly below, the authors have developed a new algorithm and software for automated synthesis of Direct sequence complementary codes. The authors propose a numerical method for analysis and comparison of this types synthesize Complementary codes with well – know code sequences like Barker and Z-complementary codes. Build on the autocorrelation...
Track before detect (TBD) in netted radar system in the presence of multi false alarms is proposed and studied. The proposed structure uses TBD algorithm based on Polar Hough Transform (PHT). This algorithm improves the detection probability of moving target along a straight line in conditions of multi false alarm. The advantage of the proposed approach is the data unification in a net of asynchronously...
In this paper we study some standard problems of SSR (secondary surveillance radar), relating to improving the detection performance of the conventional SSR and Mode S replies in the SSR FRUIT environment. We present the algorithm that consists of a conventional two-dimensional CFAR BI processor combined with the estimator of the FRUIT parameters, which is necessary for automatically selecting of...
In this paper we apply a data association in track-before detect (TBD) with a polar Hough transform (PHT) in a radar network. The proposed algorithm is applied in multiple input multiple output (MIMO) radar system. We study the sensitivity of TBD multi-radar system as a function of the errors of target trajectory parameters measurement. The results are obtained in the presence of Randomly Arriving...
This paper concerns the FPGA implementation of a time-domain stepped frequency method, which is suitable for ground penetrating radar implementation. It describes the block of the algorithm from implementation point of view. The conclusion gives information about the real-time constraints, and the device utilization for the particular reconfigurable processor.
The aim of SSA is to make a decomposition of the original series (GPR traces in the considered case) into a sum of a small number of independent and interpretable components such as: low-frequency trends, narrowband quasi-periodic signals and noise. In this paper SSA based algorithms that ldquocleanrdquo noise from the radargram and/or enhance certain characteristics of the GPR data are presented...
In this paper, a new convolution-based model for simulation of stepped-frequency GPR images is described. In contrary to the conventional convolution model, this model takes into account both the basic radar parameters and the basic parameters of multi-layered media and, therefore, it results in more accurate simulation of GPR images. The simulation results show that the algorithm presented can be...
In the present paper, an algorithm for target detection that exploits the Hough transform is proposed. The target is detected by the Hough detector. The effectiveness of the algorithm proposed is formulated in terms of a quality parameter - the probability of detection. The quality parameter is estimated using the Monte Carlo simulation approach. We compare the results of detection achieved by both...
In this paper we present the research results concerning the performance of Hough detector with an Order Statistic False Alarm Rate (OS CFAR) processor, in the presence of randomly arriving impulse interference with Poisson distributed flow and Raleigh amplitude distribution. In the presented contribution are investigated two types of Hough detectors with CFAR processors, in order to choose the most...
A simple post-detection integration technique is proposed to solve the benchmark problem for radar resource allocation in the presence of false alarms (FA) and electronic counter measurements (ECM). The benchmark problem is considered only from the point of view of target detection, and as a result, two new algorithms for adaptive radar resource allocation are presented. The algorithms proposed adaptively...
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