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Linear Frequency Modulation (LFM) is a pulse compression method which is largely implemented in the radar applications. The high peak sidelobe is its main problem instead of its superiority on the simplicity and Doppler tolerance characteristics. The curve-shaped Nonlinear Frequency Modulation (NLFM) has been developed for overcoming this lack and prior investigation showed that this method provide...
Spectrum sensing is a key function of cognitive radio (CR) to identify the vacant frequency bands (which is also referred to as spectrum holes). The future technology of CR networks should be capable to scan wideband frequencies to increase spectrum utilization. To reduce high sampling rate for sampling wideband signal, Modulated Wideband Converter (MWC) is used for data acquisition. In this paper,...
The received information on radar processor that collected from radar transmitter sometimes are not good enough to be displayed on the radar display. This problem makes user difficult to distinguish noise and object. One technique that can be used to solve this problem is by grouping the objects based its density. One of clustering method used to handle object clustering automatically is DBSCAN algorithm...
Radar is a system using electromagnetic waves for detecting the existence of an object. The algorithm commonly used is Cell-Averaging (CA-CFAR). The disadvantage of this algorithm is that has high computational time which can influence the detection performance on low end hardware/GPU system that used in low cost radar system. The more complex algorithm will need the longer time to process and the...
This paper presents the switching CA/OS CFAR using neural network for improving the radar target detection in non-homogeneous environment. This method uses one of between CA-CFAR and OS-CFAR as output threshold depends on the nearest value with the output of neural network. The neural network used in this research is the Multi-Layer Perceptron (MLP) consisted of two hidden layers. The input of neural...
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