Digital Down Conversion(DDC) and Digital Pulse Compression are used widely in pulse radar receiver. Digital Down Conversion eliminates the signal carrier frequency after sampling in order to process signal in the baseband. As the one of the most important techniques in radar algorithm, Digital Pulse Compression resolve the conflict between radar range resolution and transmitting
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Based on virtual instrument technology,the traditional distortion measurement system is redesigned by using a digital method。To make up functions of the traditional distortion measurement system,The system increases a computer interface and human-machine interface with many operating functions,implements online and offline data analysis。Distortion measurement technology and virtual instrument technology have combined to enhance the overall level
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Orthogonal Frequency Division Multiplexing (OFDM) is a multi-carrier modulation technology, which has high bandwidth efficiency and ability of coping with multipath fading makes OFDM a suitable technology for high speed wireless transmission. It’s supposed that OFDM will have an extensive application in wireless communication. It has been adopted as the physical-layer technology of several specifications.
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Continuous-Wave(CW) radar because of its compact structure, speed without blur, high accuracy and easy-to-digital implementation, etc. has been widely used in the measurement of the shooting range.With the rising requirements of high precision parameters measurement of the target, data quantity of the signal analyzer used in analysing increases quickly. The way of processing only by
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Continuous-Wave(CW) radar because of its compact structure, speed without blur, high accuracy and easy-to-digital implementation, etc. has been widely used in the measurement of the shooting range.With the rising requirements of high precision parameters measurement of the target, data quantity of the signal analyzer used in analysing increases quickly. The way of processing only by
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Continuous-Wave(CW) radar because of its compact structure, speed without blur, high accuracy and easy-to-digital implementation, etc. has been widely used in the measurement of the shooting range.With the rising requirements of high precision parameters measurement of the target, data quantity of the signal analyzer used in analysing increases quickly. The way of processing only by
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Improving the performane of computers is always the final goal of researchrers. With the development of large scale integrated circuit, computing power of the processor is rising rapidly. The bottleneck of computer performance has transformed from computing to memory accessing. Both memory access characteristics of programs and memory structure affect the memory performance. The study
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Conventional Coordinate Rotation Digital Computer (CORDIC) algorithm, which uses a series of fixed angles backward and forward rotation in an iterative manner to approach the target angle, simply needs shift and addition operations, and it is feasible to be implemented by a pipelined method. CORDIC algorithm has been widely used in many aspects, such as
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In recent years, computer science and technology had been developed rapidly, and computer graphics has made great achievement. With the virtual reality technology been widely used in commercial entertainment, industrial simulation and so on , the dynamic simulation of ocean surface became a very important recerch direction. The simulation of ocean surface not only means
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With the development of communication technology, the future information warfare isbecoming increasingly fierce. Under the pressure of high-tech war, the spread spectrumcommunication technology which is depended on its strong anti-interference ability, lowinterception rate, information hiding and so on, has been the research hot spot in military field inrecent years. Because of the short and uncertain
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