A distributed radio frequency electronic system and signal processing method

Abstract

The embodiment of the invention discloses a distributed radio frequency electronic system and a signal processing method. The system includes: at least one electronic device, a signal transmission device, and a signal processing device connected to the electronic device in one-to-one correspondence; the signal transmission device is electrically connected to each signal processing device, and is used to pass the generated reference signal through each signal processing device. The device transmits to each electronic device; the at least one signal processing device is used to perform phase processing on the received reference signal, and send the processed stable reference signal to the corresponding connected electronic device, so that each electronic device is in the same clock Baseline work runs synchronously on the same clock base. The embodiment of the present invention can avoid the problem of the phase change of the reference signal caused by all factors that cause the change of the electrical length of the cable, and can realize the high phase stability transmission of the reference signal in the coaxial cable, thereby ensuring the communication between the various devices in the distributed radio frequency electronic system. running synchronously.

Description

technical field [0001] Embodiments of the present invention relate to the technical field of signal processing, and in particular to a distributed radio frequency electronic system and a signal processing method. Background technique [0002] In engineering applications, we often need radio frequency electronic systems in a distributed layout. These radio frequency electronic systems contain the equipment required in engineering applications, and each equipment distributed in different locations makes the distribution distance of the entire system possibly exceed the range of hundreds to thousands of meters. In actual work, these devices in the radio frequency electronic system are often required to operate synchronously, and improving the phase stability of the system reference signal makes the signals between each device have good coherence, which is often to ensure that each device in the system An efficient solution that runs synchronously. [0003] At present, distrib...

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Problems solved by technology

[0004] The disadvantages of the existing technical solutions are: using the combined transmission method of cables and optical cables may introduce more noise and strays in the process of electric-to-optical conversion; simply using a phase-stable cable cannot solve the long-term drift and noise jitter of the reference signal Secondly, the phase change caused by the system with high transmission signal frequency cannot be ignored, and the high phase stability of the reference signal cannot be achieved simply by using a stable phase cable; For experimental sites or outdoor environments, it is impossible to ensure good ambient temperature stability, or to achieve the required ambient temperature stability, the price paid is too high; in addition, some radio frequency electronic systems require that the phase of the signal received by the equipment The stability is within ±1°. The possible reference signal frequency of these systems with such high requirements for phase stability is 100MHz, or a higher system operating frequency, then the corresponding short-term signal stability may be hundreds of femtoseconds The magnitude within (1fs=1e-15s), the long-term stability of the signal may be within the magnitude of 1 picosecond (1ps=1e-12s), or even higher, but none of the above existing technical solutions can achieve such a high index The phase stability effect of

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