dbf is a special file format that represents database files, database files generated by database processing systems such as Foxbase, Dbase, and Visual FoxPro; digital beamforming technology is a combination of antenna beamforming principles and digital signal processing technology. The combined product is widely used in the field of array signal processing.
The operating environment of this article: Windows 7 system, Dell G3 computer.
dbf is a special file format that represents database files, database files generated by database processing systems such as Foxbase, Dbase, and Visual FoxPro.
dbf, the abbreviation of Digital Beam Forming, translated as digital beam forming or digital beam synthesis, also represents a database file. Digital beamforming technology is a product of the combination of antenna beamforming principles and digital signal processing technology, which is widely used in the field of array signal processing.
Extended information:
Digital Beam Forming (DBF) technology is for array antennas, using array antennas The aperture is used to form a receive beam in the desired direction through digital signal processing.
Although the pattern of a single antenna is omnidirectional, for signals from multiple receiving channels of the array, digital processing methods are used to compensate for incident signals in a certain direction caused by different spatial positions of the sensors. The phase difference caused by the propagation wave path difference achieves in-phase superposition, thereby achieving maximum energy reception in that direction and completing beam forming in that direction to receive useful desired signals.
This gathers the directional gain received by the array in a specified direction, which is equivalent to forming a "beam". By changing the weight, the beam can be pointed in different directions and the beam can be scanned. Multiple beams can also be formed simultaneously through multi-channel parallel processing, and appropriate window functions can also be selected to reduce sidelobe levels.
DBF technology belongs to array signal processing and has been widely used in radar, electronic reconnaissance and electronic countermeasures, communications, sonar and other fields.
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