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MATLAB/Simulink was come across as a software platform, communication system tool box, RF tool box, and signal processing tool box were utilized for the design of Continuous Wave (CW) radar system and measured the signal power and processing gain of the system. Linear and non-linear transmitter and receiver systems considered for the study of the CW radar. CW radar system and its mathematical model built using MATLAB/Simulink. In the simulation model, core components of CW radar, including pulse width generator, linear and non-linear RF transmitter and receiver, antenna model, digital filter, and novel overlap add approach designed and simulated. In the classical technique, huge computation is required to extract the information from the target. CW radar is simple and straight forward technique motivate to use is the main contribution of this research work. A novel overlap add filter method is used and simulated. The performance of the designed CW radar system, modeled structure, and analysis of results given for the linear and non-linear transmitter and receiver. The performance of CW radar system in various conditions could be evaluated to find the different parameters, such as path loss, transmitter power, and receiver power in the presence and absence of phase noise.

This paper is aimed to develop a low-cost foot plantar pressure measurement system for mobility assistance in paraplegic patients. Force sensing foot is used to measure plantar pressure, which gives the interaction of human foot and ground of the waver while sit to stand, stand to sit, and analyze. For the purpose of determining the location of the most intense pressure points on the sole of the foot, research was undertaken on healthy individuals of varying weights. The proposed method is compared to an existing process that uses force-sensitive resistors (FSRs) placed below the foot for detecting the user intent of the motion. Because of the recent rise in the usage of lower-limb exoskeletons, plantar pressure has emerged as a viable parameter for gait rehabilitation. Foot sensors developed in the study for the control of exoskeleton are inserted into the shoe. The design of a low-cost plantar pressure measurement system to support the paraplegic patients is presented.

The notion of poly-alphabetic radar, which gave improved performance through coincidence detection, is analyzed. It is argued that what was central to it was a poly-semanticism which was achieved through poly-alphabetism. But the former can be achieved even within a single alphabet. This is illustrated and the attendant signal design problem is solved. The design is completed in two steps, first one using restricted Hamming scan for interspersed sequences and the second one using a complete Hamming scan using an appropriate joint objective function.

Abstract: Ternary sequences have superior merit factors but they cannot be transmitted with existing technology. It is proposed that a ternary sequence be coded into a binary sequence for the purpose of transmission. On reception it can be processed as a binary sequence as received and also decoded into a ternary sequence. These two interpretations provide a coincidence detection scheme for efficient target detection provided that the corresponding signal design problem is solved. Such an algorithm is developed by taking the merit factor as desideratum and the Hamming scan as optimization technique. Merit factor values obtained in some cases are further improved by implementing a back-tracking algorithm for bi-alphabetic sequence.

The detection of trailing arms in twenty spiral galaxies, completed by the 60s, allowed one to suggest the overwhelming prevalence of this sense of rotation. Pasha and Dambis (1982) have recently determined the direction of rotation in a further 54 galaxies and found two leading spirals, NGC 4490 and NGC 5395. The current sample of galaxies with an established sense of rotation contains 79 trailing and two leading systems. The two spirals found to be leading belong to M51' type galaxies.