Signal source of S-band wave radar

Abstract

The invention provides a signal source of an S-band wave radar, and the signal source comprises a time clock distribution conversion module, a synchronous triggering module, a direct digital frequencysynthesis module 1, a direct digital frequency synthesis module 2, a phase-locked loop, a first local oscillator processing module, a radio frequency processing module and a second local oscillator processing module, wherein the time clock distribution conversion module, the synchronous triggering module, the direct digital frequency synthesis module 1, the direct digital frequency synthesis module 2, the phase-locked loop, the first local oscillator processing module, the radio frequency processing module and the second local oscillator processing module are integrated on one printed circuitboard. The output end of the time clock distribution conversion module is connected with the direct digital frequency synthesis module 1, the direct digital frequency synthesis module 2 and the phase-locked loop, and the direct digital frequency synthesis module 1 is connected with the second local oscillator processing module. The second local oscillator processing module output a second local oscillator signal, and the direct digital frequency synthesis module 2 is connected with the radio frequency processing module. The phase-locked loop is connected with the first local oscillator processing module, and the first output end of the first local oscillator processing module outputs a first local oscillator signal, and the second end is connected with a second input end of the radio frequency processing module. The signal source improves the coherence and stability of an S-band wave detection radar system.

Description

Technical field: [0001] The invention relates to the technical field of microwave Doppler radar, in particular to an S-band wave measuring radar signal source. Background technique [0002] The ocean is the cradle of human life, the basis of national security, and an important support for economic development. With the reduction of land resources, it has become a global consensus to detect and use the ocean. In marine environmental monitoring and research, the effective observation and research of ocean waves has important practical significance for the development of marine resources and the prevention of marine disasters. The traditional method of obtaining ocean dynamics parameters is mainly contact measurement, such as: bottom-mounted pressure sensors, buoys, submersible buoys, and offshore platform measurements. However, although such methods are accurate in measurement, they have problems such as inability to fully reflect the real sea conditions in the sea area to b...

AI Technical Summary

Problems solved by technology

In the hardware design of this type of radar, the traditional solution is to design the signal generation circuit and the radio frequency processing circuit as two modules separately, and then connect them through radio frequency cables, which can ensure that the two modules have better performance when they work alone , but in practical applications, higher requirements are placed on the connection between modules, and the volume of the system is increased, and the miniaturization and compact design are not used

When working coherently, line disturbances and transmission delays on the cable directly affect the performance of the radar system

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