Nano satellite remote-measuring and remote-controlling method capable of switching communication path
A technology for satellite telemetry and switching communication, which is applied in the field of satellite telemetry and remote control processing, and can solve the problems of loss, failure of on-board tasks, and difficulties in multi-mode redundancy of on-board computers.
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specific Embodiment approach 1
[0015] Specific implementation mode 1. Combination figure 1 and figure 2 Describe this embodiment, a nano-satellite telemetry remote control method that can switch communication paths described in this embodiment, the method is based on the intra-satellite field bus of multi-master communication, the specific steps of the method are:
[0016] Step 1. The ground measurement and control station judges whether the on-board computer is faulty by checking whether the update frequency and communication of the telemetry data sent by the on-board computer of the satellite system are normal. If the on-board computer is working normally, go to step 2, and if the on-board computer is faulty, go to step 3 ;
[0017] Step 2, multiple subsystems of the satellite communicate with the ground measurement and control station through the on-board computer;
[0018] Uplink data transmission process: The ground measurement and control station sends the remote control signal to the on-board ...
specific Embodiment approach 2
[0031] Specific embodiment 2. This embodiment is a further description of the nano-satellite telemetry and remote control method with switchable communication paths described in the specific embodiment 1. The satellite subsystem rewrites the telemetry data according to the received telemetry forwarding target address instruction. The location where the target address is stored is the non-volatile memory of the satellite subsystem.
[0032]For telemetry forwarding, the telemetry forwarding target address is stored in the non-volatile memory of each subsystem. The default target address is the bus address of the on-board computer, and the on-board computer completes the processing and forwarding of the telemetry data. The ground detects the working status of each subsystem of the satellite based on the satellite telemetry data. When the telemetry data of each subsystem of the ground station is not updated for a long time and the communication between the ground station and the te...
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