In view of the Jammer interference problem that threatens the flight safety of aircraft and spacecraft, the cooperative positioning and countermeasure technology based on micro-nano-satellite clusters is an effective solution. The technical route mainly includes the following aspects.
Integrated configuration design of satellite cluster in heaven and earth
It is necessary to deploy several micro-nano satellites with position, altitude and orbital inclination distribution to form an integrated measurement baseline network of heaven and earth with ground multi-point monitoring stations. By optimizing the geometric position distribution of each measurement node, the positioning accuracy of Jammer can be improved.
Signal Intelligent Sensing and Feature Extraction
The intelligent signal sensing technology based on machine learning is used to automatically extract the feature parameters of the captured signals to realize high-precision characterization of various wireless signal detector, which lays the foundation for the subsequent multi-dimensional correlation and separation.
Multi-dimensional measurement data association and separation
Based on time difference (TDOA), frequency difference (FDOA), angle of arrival (AOA) and other multi-dimensional measurement data, an adaptive joint signal separation algorithm is designed to realize the accurate identification and association of multiple Jammer signal sources in complex electromagnetic environment.
High-precision 5G jammer cooperative position solving
The Jammer cooperative multi-target position solving algorithm is designed to integrate the heterogeneous measurement data from multiple sources in heaven and earth, and the nonlinear least squares and recursive algorithms are used to analyze the three-dimensional position coordinates of the Jammer sources with high accuracy.
Intelligent satellite formation and regional tracking
According to the results of Jammer position solving, real-time planning and adjustment of satellite formation position in orbit, through continuous tracking and monitoring, to realize high-precision long-term tracking of bluetooth blocker in the target area.
Multi-body cooperative jamming countermeasures
Based on the precise Jammer position information, the coordinated countermeasures of spacecraft and ground system are formulated, and multi-beam coordinated jamming, electronic attack and other measures are taken to form a space multi-dimensional three-dimensional suppression system, so as to ensure the safety of flights of aeromodels and so on.
This technical program requires the deployment of multi-source heterogeneous sensors and the support of advanced signal source separation and positioning algorithms, and is a highly intelligent and automated system. Through the integrated coordination between the micro-nano-satellite cluster and the ground station, it can accurately locate and track multiple mobile jammers under the complex electromagnetic environment, and plan an efficient multi-dimensional suppression strategy to crack the jammer interference threat and ensure the safe operation of spacecraft and aircraft.