The integrated radar communication system combines the functions of radar and communication systems. It has attracted wide attention because of its advantages in effectively reducing electromagnetic interference between equipment and reducing equipment volume. However, there is no complete radar communication integrated signal design scheme so that the radar and communication system can operate well at the same time to achieve better detection and communication performance. In order to achieve better results for the integration of radar communication, this article summarizes and analyzes the existing research on integration of radar communication, and summarizes the realization of two design ideas of superimposed signal and single signal. The basic system composition of pulse radar and continuous wave radar, the working mechanism of radar speed and distance measurement and the basic composition of communication system are described. Research has proved that through the integration of radar communication, signal processing and identification are greatly improved, the signal transmission strength is more than 30% stronger than that without integration, and the transmission distance is 20% higher. Moreover, there are also great differences between the different integration methods. The fuzzy function used in this article is better than other experimental methods. This shows that the integrated radar communication system is the trend of future research on signal processing and recognition.
Starting with the concept of logarithmic video amplifier, this paper mainly derives the transfer functions of different logarithmic video amplifiers. The practical application of logarithmic video amplifier in the radar warning receiver is designed, and three pieces of conclusion about logarithmic video amplifier in RWR have been reached. Firstly, logarithmic transformation is completed for obtaining the azimuth information. Secondly, compressing the dynamic range is realized so that to the subsequent circuits signal processing becomes easier. Thirdly, the signal is amplified for improving the sensitivity of the receiver. A three-parallel-summation and single-series logarithmic video amplifier is used in a RWR so its direction finding precision is up to 8°, its dynamic range is up to 140dB, its sensitivity is up to -80dBm and its technique is in a higher level.
The integrated radar communication system combines the functions of radar and communication systems. It has attracted wide attention because of its advantages in effectively reducing electromagnetic interference between equipment and reducing equipment volume. However, there is no complete radar communication integrated signal design scheme so that the radar and communication system can operate well at the same time to achieve better detection and communication performance.In order to achieve better results for the integration of radar communication, this article summarizes and analyzes the existing research on integration of radar communication, and summarizes the realization of two design ideas of superimposed signal and single signal. The basic system composition of pulse radar and continuous wave radar, the working mechanism of radar speed and distance measurement and the basic composition of communication system are described. Research has proved that through the integration of radar communication, signal processing and identification are greatly improved, the signal transmission strength is more than 30% stronger than that without integration, and the transmission distance is 20% higher. Moreover, there are also great differences between the different integration methods. The fuzzy function used in this article is better than other experimental methods. This shows that the integrated radar communication system is the trend of future research on signal processing and recognition.
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