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Distributed multi-static radar transmit-receive wave beam synchronization and wave beam control high-precision method

A radar transceiver and beam control technology, applied in radio wave measurement systems, instruments, etc., can solve the problems of low space synchronization accuracy and difficulty in meeting actual needs, and achieve the effect of improving pulse tracking accuracy, facilitating engineering realization, and improving stability

Inactive Publication Date: 2017-08-18
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS +1
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Problems solved by technology

[0003] Due to the complex and changeable battlefield environment and the unknown target information, in the process of cooperative detection of the target area by multi-base radar, when the receiving platform is close to the target, the platform or the target moves at high speed and large maneuvering conditions, the traditional sending and receiving pulse catch-up The spatial synchronization accuracy of the method is low and it is difficult to meet the actual needs

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  • Distributed multi-static radar transmit-receive wave beam synchronization and wave beam control high-precision method
  • Distributed multi-static radar transmit-receive wave beam synchronization and wave beam control high-precision method
  • Distributed multi-static radar transmit-receive wave beam synchronization and wave beam control high-precision method

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Embodiment Construction

[0052] The invention proposes a method for realizing high-precision transmission and reception beam synchronization and beam control based on the discrete pulse chasing method and the autonomous positioning method, and by controlling the space synchronization error of the transmission and reception beams. The technical solutions provided by the present invention will be described in detail below in conjunction with the accompanying drawings.

[0053] 1. Space synchronization technology based on discrete pulse chasing method

[0054] When performing space synchronization, receiving the catch-up beam not only fully utilizes the gain of the transmitting and receiving antenna and transmitting power, but also improves the measurement accuracy and resolution. When spatial synchronization is realized, a discrete form of beam chasing method is used.

[0055] When receiving and sending pulses to catch up, the receiving station only receives the target echo signal in a specific space a...

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Abstract

The present invention provides a distributed multi-static radar transmit-receive wave beam synchronization and wave beam control high-precision method. The method is based on the discrete pulse chasing method and the self-localization method to control the transmit-receive wave beam space synchronization error to realize high-precision transmit-receive wave beam synchronization and wave beam control. When a receiving platform is far away from a target and the distance between the receiving platform and the target is larger than 10km, the transmit-receive wave beam employs the pulse chasing method to realize space synchronization. When the distance between the receiving platform and the target is smaller than 10km, the synchronization performance of the pulse chasing method is sharply deteriorated. The self-localization method is employed to improve the space synchronization performance when the distance is small, namely the target position coordinates and the actual position of the receiving platform are employed to determine the orientation and the pitching direction of the receiving wave beams. Besides, pointing errors of the receiving wave beams and the emission wave beams are controlled in a certain range to actually realize the space synchronization of transmit-receive wave beams.

Description

technical field [0001] The invention relates to the technical field of space synchronization of a distributed multi-base radar system, in particular to a high-precision method for synchronization and beam control of a distributed multi-base radar transmitting and receiving beam. Background technique [0002] The transmitting and receiving systems of distributed multistatic radar are separated on different platforms. Due to this special cooperative working method, the spatial synchronization of transmitting and receiving beams between two stations is one of the core technologies of distributed multistatic radar systems. Due to the high-speed movement of the platform, the radar has the characteristics of large instantaneous dynamics, high precision requirements, and difficult control, making it difficult to realize space synchronization. To realize a distributed multi-base radar system, the space between the transmitting and receiving beams between different platforms must be s...

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Application Information

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IPC IPC(8): G01S7/28
CPCG01S7/28
Inventor 陆智俊潘明海汪宗福胡奇龙伟军韩清华李勇
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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