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In this paper, a mixed formation of satellites and space debris is proposed to solve debris cleaning problem. The relative dynamics model of formation near the point of Earth/Moon-Sun is analyzed and the solar radius pressure is used as reconfiguration force. Then, a nonlinear controller with feed forward neural networks is designed which using a hybrid algorithm. The weights between input layer and...
This paper discussed a kind of design of vehicle location system based on ARM. The architecture and working theory of this system is introduced in details, and introduces the vehicle location system which uses the ARM microprocessor LPC2129 as a control unit to combinative with GPS LR9548 and GSM TC35 modules. Explores location solution, map—matching and data compress that associated with the positioning,...
Aiming at the characteristic that small satellite storage battery usually has no enough ground experiment & in-orbit telemetry data, a new Dynamic Bi-step MPNN based method is proposed to solve the problem of life prediction of small satellite storage battery. The method can mainly be divided into two steps: The first named 1st-MPNN process is to establish a modified probability neural network...
The current intrusion detection technology based on the ground network is not adapted in the satellite network because of its motion. Analyzing the function characteristic of the satellite nodes, this paper builds a security domain based on the login and log-out mechanism, then a lamination distributed intrusion detection model of satellite network is proposed and a cooperation mechanism of intrusion...
Satellites network is different from the terrestrial one, the transmission delay between the nodes and the ground station is quite long. Furthermore, the nodes mobility is more intensive and the nodes are power-limited. Based on those characteristics, an new policy-based network management architecture was build for the satellites network. In this architecture a local policy decision poinst(LPDPs)...
In satellite network the nodes are far from the terrestrial station, so the transmission delay between the satellite and the terrestrial station is long, furthermore the nodes mobility is intensive. Based on those characteristics an new network management architecture was build for the satellites network. The method that disposing a local policy decision point (LPDP) between the traditional policy...
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