Passive radar system based on target positioning and target positioning method
A target positioning, passive radar technology, applied in radio wave measurement systems, radio wave reflection/re-radiation, use of re-radiation and other directions, can solve problems such as the curvature of the earth
Pending Publication Date: 2020-03-17
周颖平 +1
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[0005] The embodiment of the present application provides a passive radar system and a target positioning method based on target positioning, which are used to solve the problem in the prior art that the reference signal received by the receiving station is limited by the curvature of the earth, and improve the accuracy of positioning and tracking air targets
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[0052] The following will clearly and completely describe the technical solutions in the embodiments of the present application with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, not all of them. Based on the embodiments of the present application, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present application.
[0053] The passive radar system based on target positioning provided by the embodiment of the present invention can be as follows Figure 2Ashown. The system may include: a transmitting station 210 , a receiving station 220 and a radar monitoring center 230 . In the system provided by the embodiment of the present invention, the receiving station 220 and the transmitting station 210 both include the same first receiving device, and obtain reference si...
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The invention discloses a passive radar system based on target positioning and a target positioning method. The system comprises a transmitting station and a receiving station, wherein the transmitting station performs preset signal processing of a radio signal sent by a target satellite to obtain a second reference signal, and broadcasts and sends the second reference signal, the receiving station performs preset signal processing of the radio signal sent by the target satellite to obtain a first reference signal which is the same as the second reference signal in frequency spectrum, the signal obtaining time of the first reference signal is the same as the signal obtaining time of the second reference signal, and at least one detection signal after the to-be-detected target reflects thesecond reference signal is received. The system is advantaged in that the radar monitoring center acquires the time difference positioning information based on the first reference signal and the at least one detection signal. The system does not need to consider the receiving limitation of the earth curvature on a reference signal.
Description
technical field [0001] The present application relates to the technical field of passive radar, in particular to a passive radar system based on target positioning and a target positioning method. Background technique [0002] At present, in the ground air defense warning system with active radar as the main detection system, in order to improve the comprehensive countermeasure capability of active radar, various new technologies have been promoted and applied, such as ultra-low sidelobe antenna, digital beam forming, adaptive processing , target recognition and imaging, etc. At the same time, efforts are also being made to develop passive radar that does not radiate electromagnetic signals. Since the passive radar system is relatively simple, low in cost, and does not radiate electromagnetic signals, it is not easy to be detected by the enemy's reconnaissance system. Therefore, the improvement and development of the passive radar system has become an important detection me...
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CPCG01S13/70
Inventor 董玉红
Owner 周颖平