Chengdu University of Information Technology

Other

Chinese Academy of Sciences

Yuming Du

Kun Liu

Jiang Wang

Rubin Jiang

Shoude Wang

Juan Wu

Jianxin He

Jiaming Jia

Xinggang Zhang

The present invention relates to a radiation source orientation technology. The invention discloses a method for optimizing the orientation performance of radiation source orientation system, which comprises the following steps: establishing a radiation source orientation matrix; obtaining the non-zero singular value of the orientation matrix; classifying orientation noise that affects the radiation source orientation system according to the distribution characteristic of noise energy; determining the optimal orientation matrix of the radiation source orientation system according to the minimum non-zero singular value &#x3c3;of the orientation matrix and its number of array elements m; determining the optimal orientation array according to the non-zero singular value of orientation matrix considering the distribution of different noise energy. The invention lays a foundation for the optimal design of a non-planar array in a radiation source orientation system. The optimal orientation matrix and array provided by the invention can be used to effectively improve the orientation accuracy of the radiation source orientation system and the resistance of the orientation system to interference.

Method for optimizing the orientation performance of radiation source orientation system

A system and method for autonomous monitoring and active defense of lightning includes a current sensor installed on a metal object, an antenna installed near the current sensor, a signal processing and warning module (SPWM), which is configured to detect received current and field pulse signals, and issuing an early warning signal when detecting origination and development of pulses of a downward stepped leader and an upward leader, where the early warning signal is sent to a controlled surge protection device (CSPD) and/or a polarized reconfigurable lightning protection antenna, and the CSPD completes on/off actions before a first return stroke and/or the lightning protection antenna becomes only to receive/transmit horizontally polarized electromagnetic waves.

System and method for autonomous monitoring and active defense of lightning

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Chengdu, China

Yuming Du