HTS satellite payload radio frequency domain implementation method based on N-active framework

Abstract

The invention discloses an HTS satellite payload radio frequency domain implementation method based on an N-active framework. The method specifically comprises the following steps: (1) determining thefrequency range of a feed beam and the frequency range of a user beam according to available frequency resources provided by uplink and downlink frequency bands of an HTS satellite communication link, and designing and accounting the maximum envelope BW of the working bandwidth of a single user beam; (2) determining that a single user beam is managed by several gateway stations in the HTS satellite communication system; (3) designing an HTS satellite load forward feed shunt topological structure; (4) designing a forward feed shunt synthesis network topology structure; (5) designing a payloadscheme according to the forward feed shunt synthesis network; (6) designing a HTS satellite load return link feed shunt topological structure; (7) designing a backward link shunt synthesis network topology structure; and (8) designing a payload scheme according to the backward link shunt synthesis network. According to the invention, a load scheme based on an N-active system framework is realizedin the radio frequency field.

Description

technical field [0001] The invention belongs to the technical field of satellite payloads, and relates to a radio frequency domain implementation method of satellite payloads. Background technique [0002] The high-throughput communication satellite system is a multi-beam double-hop communication, and the general frequency plan is in the Ka frequency band. In recent years, the feeder link has gradually developed to the millimeter-wave Q / V frequency band to meet the high-speed satellite communication, broadband digital transmission and other two-way satellites. multimedia business. However, the Q / V frequency band has a large amount of rain attenuation. If a fixed system margin is used to overcome the attenuation effect, it will cause a huge waste of power resources and an increase in communication costs in clear skies. However, in the case of large attenuation, it cannot be obtained Complete compensation will deteriorate system performance and even cause communication interr...

AI Technical Summary

Problems solved by technology

However, the N-acitve system architecture adds extremely high complexity and great technical difficulty to the design of space satellite payloads, which has not yet been realized in engineering

At present, there is a trend in the world to use digital transparent forwarding (DTP) technology to realize the N-active system architecture, but DTP technology needs to realize the exchange and communication between a user and multiple gateways in the satellite payload in the digital domain. On the one hand, the payload must be from Ka or Q / V feed frequency conversion to the digital domain of the baseband frequency, this conversion operation requires a lot of equipment

On the other hand, the channelized switching equipment that realizes digital transparent forwarding needs to process all frequencies of inbound and outbound power feeds. The total processing bandwidth for ultra-large-capacity satellite systems is between 50 and 100 GHz, and the total processing bandwidth for very high-throughput communication systems is The bandwidth is above 200GHz. The bandwidth processing capability of this scale poses a severe test to the performance requirements of components, equipment weight, power consumption, and heat consumption. The manufacturing cost is also much higher than the general HTS communication load.

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