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 comprises at least one electronic equipment, a signal transmissiondevice and signal processing devices connected with the electronic equipments in a one-to-one correspondence mode. The signal transmission device is electrically connected with each signal processingdevice and is used for transmitting the generated reference signal to each electronic equipment through each signal processing device; and the at least one signal processing device is used for carrying out phase processing on the received reference signal and sending the processed stable reference signal to the correspondingly connected electronic equipment, so that the electronic equipment worksunder the same clock benchmark and synchronously operates under the same clock benchmark. According to the embodiment of the invention, the problem of reference signal phase change caused by all factors causing cable electrical length change can be avoided, and high-phase stability transmission of the reference signal in the coaxial cable can be realized, so that operation synchronization among equipment in a distributed radio frequency electronic system is ensured.

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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