Antenna device used in airborne search engine

Abstract

The invention relates to an antenna device used in an airborne search engine. The antenna device comprises a direction-finding antenna array, a transfer switch as well as a surface acoustic wave (SAW) filter and an amplifier, wherein, the direction-finding antenna array comprises a plurality of antennas which are used for respectively receiving the same radio signal; according to a control command from a host of the airborne search engine, a plurality of the received signals are merged into an integrated signal through the transfer switch; and the SAW filter and the amplifier are used for correspondingly filtering and amplifying the integrated signal, then the filtered and amplified signal is sent to the host of the airborne search engine through a radio-frequency (RF) cable, and finally the host of the airborne search engine calculates the phase difference of the merged received signals so as to obtain the relative direction between the transmitted radio signal and the airborne search engine. The antenna device used in the airborne search engine has the beneficial effects that the plurality of the received signals are merged into one signal in a time division manner, which solves the problem of difficult phase calibration; therefore the airborne search engine is aided to perform accurate localization, the progress of rescue workers for rescuing people who are in distress and carry a beacon is accelerated, and the success probability of fixed-point rescue is improved.

Description

technical field [0001] The invention relates to an antenna device, in particular to an antenna device for an airborne search machine. Background technique [0002] According to the relevant regulations of the International Maritime Organization and my country's Maritime Safety Administration, most seagoing ships are equipped with communication and rescue equipment such as VHF radio stations, maritime wireless telephones, GPS positioning systems, and satellite ship stations. In the event of an accident, the ship can call for help from the search and rescue department through these devices. However, after the crew fell into the water, under the action of the current, they would drift away from the accident site. Since the drowning crew basically has no personal communication or position indicating equipment, when the rescuers arrive at the wreck site, they can quickly find the wrecked ship, but it is difficult to determine the specific location of the drowning crew. At prese...

AI Technical Summary

Problems solved by technology

[0005] The object of the present invention is to provide a kind of antenna device for airborne search machine, the radio signal transmitted by the same beacon machine is received correspondingly by a plurality of antennas in different positions, by time-division combining the received multi-channel signals into one signal to overcome the difficulty of phase calibration of existing devices; after that, the phase difference of multiple signals is calculated by subsequent algorithms to measure the angle, so as to obtain the relative direction of the beacon machine and the airborne search machine that transmits the radio signal, and speed up The search and rescue process of the search and rescue personnel for the victims carrying the beacon machine improves the success probability of fixed-point rescue

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