Disaster self-rescue emergency communication equipment based on adaptive LDPC and directional antenna

Abstract

The invention discloses disaster self-rescue emergency communication equipment based on a self-adaptive LDPC (Low Density Parity Check) and a directional antenna. Communication connection among a trapped person mobile phone terminal, disaster area rescue communication sub-equipment based on the self-adaptive LDPC and the directional antenna, communication relay sub-equipment based on the self-adaptive LDPC and the directional antenna and a rescue center mobile phone terminal is constructed; high-quality and accurate communication connection and information transmission of disaster-affected person information from disaster area rescue communication sub-equipment to communication relay sub-equipment and then to a rescue center mobile phone terminal are realized. According to the invention, long-distance, efficient and accurate information transmission between disaster victims and rescue workers is realized under the complex change of the external environment, the communication error rate is effectively reduced under the control of a code rate adaptive function through the carried adaptive LDPC coding circuit and decoding circuit, and the communication full coverage of the disaster victims is realized through the directional antenna. And the equipment putting and investment cost is reduced.

Description

technical field [0001] The invention relates to the field of disaster self-rescue emergency communication, in particular to a disaster self-rescue emergency communication device based on an adaptive LDPC and a directional antenna. Background technique [0002] In recent years, natural disasters have occurred frequently, and the existing optical fiber and base station communication equipment are easily damaged. People in disaster areas will be trapped and unable to send distress signals in time. Therefore, it is particularly important to establish an emergency self-rescue system. [0003] Existing post-disaster search and rescue methods usually include equipment such as search and rescue dogs and life detectors, and the working modes include sound waves, vibrations, and infrared detection. However, these equipment are usually only suitable for small-scale search and rescue, and cannot communicate with the outside world. For example, when an earthquake disaster occurs, some...

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Problems solved by technology

[0006]For the traditional horizontal omnidirectional antenna, although its own coverage area is 360°, the gain is small, the volume is large, and the directivity is insufficient. The transmission distance is limited, and the shortfall can only be made up by increasing the transmission power

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