请帮我翻一下以下文段，粗略翻译即可，哪位英语达人帮帮忙，谢谢啦

2025-03-03 11:14:20

推荐回答（2个）

回答1：

Space to realize high power, optical communication, the wide range of lasers require high velocity modulation transmitter. PPM Pulse (due to its Modulation) Modulation them higher power utilization in space optical communication system is widely used. PPM demodulation system applied in the laser communications, ask can greatly increase the anti-interference ability of the system, and adopt the method of laser in a given to pulse repetition frequency, with minimal light reached the highest average power of data transfer rate, which greatly reduces the launch of laser power requirements. The application of digital signal processor (DSP) and FPGA demodulation system to PPM. The main content of this article firstly in the communication systems of spatial laser modulation technique analysis and comparison, and detail the PPM modulation mode. The proposed method is suitable for PPM current space optical communication system of modulation mode. Simultaneously also PPM demodulation technology, this paper discusses the advantages and disadvantages of demodulation PPM hard decision.

回答2：

Space optical communications to achieve high power, wide range of communication, which demands an extremely high rate of modulation laser transmitter. PPM (Pulse Position Modulation) modulation because of its high power efficiency in space optical communication systems are widely used. PPM modulation and demodulation system used in spatial laser communication, you can greatly improve the system of anti-jamming capability, and using this modulation to a given laser pulse repetition frequency, with the minimum of light the highest average power data transfer rate, which greatly reduces the requirements on the laser emission power. Application of the DSP and the FPGA to the PPM modulation and demodulation system. The main content of this article first space laser communication system analysis and several modulation techniques are compared, and details the PPM modulation. PPM modulation is proposed for the current space optical communication system of modulation. PPM demodulation while also initiated discussions to explain the advantages and disadvantages of PPM hard-decision demodulation.

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