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Learn What Is A 2-axis Marine Antenna

Edit: Dotogo Tecchnologies Co.,Ltd      Date:Jun 26, 2017

Learn what is a 2-axis Marine Antenna
2-axis Marine Antenna, also known as adaptive antenna array, variable antenna array, multi-antenna. The 2-axis Marine Antenna refers to an antenna array with spatial information (such as propagation direction) that can determine the signal and the intelligent algorithm for tracking and locating the signal source, and can perform spatial filtering based on this information.

The 2-axis Marine Antenna is a bi-directional antenna mounted at the base station and obtains directivity through a set of fixed antenna elements with programmable electronic phase relationships and can simultaneously acquire the directional characteristics of the links between the base station and the mobile station.

The 2-axis Marine Antenna uses the space division multiplexing (SDMA) method to reduce the influence of the delay diffusion, Rayleigh fading, multipath and channel interference by distinguishing the signal in the propagation path direction, and distinguishing the same frequency and the time slot signal And, in combination with other reuse techniques, maximize the efficient use of spectrum resources. Early applications focused on radar and sonar signal processing, and were introduced into military communications in the 1970s. With the development of mobile communication technology, array processing technology was introduced into the field of mobile communications, and soon formed a 2-axis Marine Antenna research.
WIFI antenna

In the development of mobile communication technology, 2-axis Marine Antenna, which is represented by adaptive array antenna, has become one of the most active research fields. The application areas include sound processing, tracking scanning radar, radio astronomy, radio telescope and 3G mobile phone network.
The 2-axis Marine Antenna consists of three parts: an antenna array that realizes the signal space oversampling; a beamforming network for weighting the outputs of the array elements; and a reassembly of the control part of the weights. In mobile communication applications, for ease of analysis, sidelobe control, and DOA (direction of arrival) estimation, the antenna array uses a uniform linear array or uniform circular array. The control part (ie, the algorithm part) is the core of the 2-axis ocean antenna, and its function is based on the signal environment, select a certain criterion and algorithm to calculate the weight.

In the mobile communication environment, the complex terrain, the structure of the building will have an impact on the spread of radio waves, the interaction between a large number of users will produce delay spread, Rayleigh fading, multipath, channel interference, which will make Communication quality is affected. The use of 2-axis Marine Antenna can effectively solve these problems. 2-axis Marine Antenna using space division multiple access technology, the use of signal transmission in the direction of the difference, the same frequency or the same slot, with the same code channel signal to maximize the use of limited channel resources.

The core of the 2-axis Marine Antenna in the digital signal processing section, which according to certain criteria, causes the antenna array to produce a directional beam pointing to the user and automatically adjusts the weighting factor to achieve the desired spatial filtering. The two key issues that need to be addressed by the 2-axis Marine Antenna are the identification of the direction of the signal and the implementation of adaptive shaping.