Bistatic radar receiving and sending beam three-dimensional synchronization method based on coordinate transformation
A technology of bistatic radar and coordinate conversion, which is used in radio wave measurement systems, reflection/re-radiation of radio waves, utilization of re-radiation, etc., and can solve problems such as the inability to meet the needs of bistatic radar projects.
Active Publication Date: 2015-04-22
CNGC INST NO 206 OF CHINA ARMS IND GRP
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Problems solved by technology
Modern bistatic radars generally use active array antennas, and the transmitting and receiving beams are needle-shaped beams that can be electrically scanned flexibly in two dimensions, azimuth and elevation. Theoretical analysis and derivation of transceiver synchronization can no longer meet the actual engineering needs of bistatic radar in three-dimensional synchronization of distance, azimuth and elevation
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[0033] Now in conjunction with embodiment, accompanying drawing, the present invention will be further described:
[0034] Step 1: Establish a Cartesian coordinate system with the receiving station as the coordinate origin, where the coordinates of the receiving station and the transmitting station are R(0,0,0) and T(E T ,N T ,H T ), according to the positional relationship between the transceiver station and the detection area, the azimuth and pitch angles of the antenna of the transceiver station are obtained, respectively Az T 、El T 、Az R and El R .
[0035] Step 2: According to the radar task, arrange M transmitting beams in the sinusoidal space coordinate system of the transmitting station, (α Tm ,β Tm ), m=1..M, α Tm , β Tm are the azimuth and elevation sine values of the transmitting beam respectively; in the sine space coordinate system of the receiving station array, N receiving beams are arranged according to a certain beam crossing point level, and the az...
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The invention relates to a bistatic radar receiving and sending beam three-dimensional synchronization method based on coordinate transformation. According to a three-dimensional geometric model and a coordinate transformation technology, a bistatic radar sending and receiving beam synchronization intersection table can be quickly generated. The method has the engineering practicability, and has been applied to a certain type of bistatic radar, and the effectiveness of the method is verified by range tests. The method has the wide application prospect in the bistatic radar, and larger economic benefits, military benefits and social benefits can be brought in the future. The method is suitable for bistatic radar systems in which active phased array antennas are adopted in different application fields, and the practical method and the calculation process that the beam synchronization is conducted on bistatic radar receiving and sending beams in the three dimension including the distance, the dimension and the pitching are achieved.
Description
technical field [0001] The invention belongs to the technical field of bistatic radar, and in particular relates to a three-dimensional synchronization method for transmitting and receiving beams of bistatic radar based on coordinate conversion. Background technique [0002] Bistatic system radar has gradually become a research hotspot in recent years because of its outstanding anti-active jamming ability and battlefield survivability, and has been applied in the fields of air defense intelligence and artillery radar. The bistatic radar transmits and receives separately, and the baseline distance varies from several thousand meters to tens of kilometers. When working, the antenna beam of the transceiver station must be irradiated to the target at the same time in order to effectively detect the target. Space synchronization is the "three same "One of the key technologies. [0003] The realization of bistatic radar transmit and receive beam synchronization mainly includes pu...
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IPC IPC(8): G01S13/00
CPCG01S7/03G01S13/003
Inventor 黄金杰宋思盛姜洋王建强刘亘炜
Owner CNGC INST NO 206 OF CHINA ARMS IND GRP