Layered circuit switching system of spaceborne signal processing platform
A signal processing and circuit switching technology, applied in the field of satellite payloads and satellite communications, which can solve the problems of difficult circuit switching, large volume and weight of high-level onboard equipment, and many switch matrix orders, reducing the number of cables and enhancing maintainability. , the effect of reducing the order
Active Publication Date: 2016-11-30
10TH RES INST OF CETC
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Problems solved by technology
Due to the large number of cables in the switching system and the high order of the switch matrix, it is difficult to realize circuit switching from any input terminal to any output terminal, resulting in large volume and weight of high-speed spaceborne equipment
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[0021] The present invention will be further described below in conjunction with the accompanying drawings.
[0022] refer to figure 1 . In a preferred embodiment described below, the hierarchical circuit switching system of the on-board signal processing platform has a fully switched switch matrix with N input terminals and N output terminals. N inputs and N outputs including N inputs I 1 , I 2 、…I nm and N outputs O 1 , O 2 ,...O mn , where, N=m×n, the on-board load switching equipment can transfer from any input terminal I x The input signal is switched to any output O y Output, and 1≤x, y≤N. The layered circuit switching system of the spaceborne signal processing platform can be divided into two layers. The switching equipment on the first layer is composed of n m×m full-switching switch matrices, which are A 1 、A 2 、…A n , the second-layer switching equipment is composed of m n×n full-switching switch matrices, respectively B 1 , B 2 ,...B m . The full-swi...
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The invention discloses a layered circuit switching system of a spaceborne signal processing platform, and aims to provide a multimode layered switching circuit structure which can reduce the cable quantity of the switching system and the order of switch matrixes and can realize circuit switching from any input end to any output end. The layered circuit switching system of the spaceborne signal processing platform is divided into two layers, switching equipment on the first layer is composed of n mXm total-switching switch matrixes, switching equipment on the second layer is composed of m nXn total-switching switch matrixes, and the switching switch matrixes on different layers are connected with one another pairwise through cables or optical fibers; in the nXn total-switching switch matrixes, each channel of input signals is divided into n channels via an n-channel splitter prior to being selectively outputted via n single-pole n-throw switches, so that each output is switched to arbitrary input, and signal flow switching of any ports from n inputs to n outputs is realized. The layered circuit switching system is applicable to various switching modes such as radio frequency switching, intermediate frequency switching and optical fiber switching on the spaceborne platform.
Description
technical field [0001] The invention relates to the field of satellite load and satellite communication, in particular to a signal exchange circuit of a space-borne platform for improving space environment adaptability on a space-borne platform in a space information network. Background technique [0002] The space information network is a network system that uses satellite platforms, loads, and ground infrastructure as nodes to acquire, transmit, and process space information in real time. Satellite-based communication and data transmission are the key links. Early satellite communication and data transmission nodes can only amplify the signal and convert the uplink frequency to the downlink frequency, which is commonly known as "transparent forwarding". The ground terminal equipment transmits the relevant uplink signal to the satellite equipment through the antenna , the satellite equipment performs frequency conversion processing and transmits the downlink signal to the r...
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IPC IPC(8): H04L12/933H04L12/931H04B7/185
CPCH04B7/18515H04L49/101H04L49/35
Inventor 胡建平李婷
Owner 10TH RES INST OF CETC