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Satellite Systems

Acquisition, Processing, Storage and Communication with Power and animation

Animation_Target_Processing

Browsable image of the model.

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<h2>Sun</h2><table border="1"><tr><td><b>Parameter</b></td><td><b>Expression</b></td><td><b>Value</b></td></tr><tr><td>Block_Documentation</td><td>Enter User Documentation Here</td><td>Enter User Documentation Here</td></tr><tr><td>Battery_Charge_Hr</td><td>Battery_Charge_Hr</td><td>1440.0</td></tr><tr><td>New_Charge</td><td>New_Charge</td><td>50</td></tr><tr><td>Variation</td><td>10</td><td>10</td></tr></table> <h2>Satellite</h2><table border="1"><tr><td><b>Parameter</b></td><td><b>Expression</b></td><td><b>Value</b></td></tr><tr><td>Block_Documentation</td><td>Enter User Documentation Here</td><td>Enter User Documentation Here</td></tr><tr><td>stepInRadians</td><td>PI/30.0</td><td>0.1047197551197</td></tr><tr><td>SimTime</td><td>SimTime</td><td>86401</td></tr><tr><td>Baseline_Battery</td><td>Battery_Charge_Hr * 0.1</td><td>144.0</td></tr><tr><td>SDRAM_Speed</td><td>600.0*SpeedFactor</td><td>360.0</td></tr><tr><td>Exec_Speed</td><td>600.0*SpeedFactor</td><td>360.0</td></tr><tr><td>SRAM_Speed</td><td>500.0*SpeedFactor</td><td>300.0</td></tr><tr><td>Bus_Speed</td><td>500.0*SpeedFactor</td><td>300.0</td></tr><tr><td>Link_Speed</td><td>500.0*SpeedFactor</td><td>300.0</td></tr><tr><td>Battery_Charge_Hr</td><td>Battery_Charge_Hr</td><td>1440.0</td></tr><tr><td>SpeedFactor</td><td>Technology_Selection</td><td>0.6</td></tr><tr><td>Low_Range</td><td>600.0</td><td>600.0</td></tr><tr><td>High_Range</td><td>900.0</td><td>900.0</td></tr><tr><td>SDRAM_Size</td><td>SDRAM_Size</td><td>8000</td></tr><tr><td>Next_Low_Range</td><td>8000.0</td><td>8000.0</td></tr><tr><td>Next_High_Range</td><td>9600.0</td><td>9600.0</td></tr></table>

The satellite is rotating around the earth. Inside the satellite there is a behavior and an architecture. There is also a power management module. When the satellite is on the side between the earth and Sun, the array panels are charging with the battery. When they are on the eclipse (or night) side, then there is only a discharge. When the satellite power reserve goes below a threshold, the model stops all processing. The processing is restarted when the satellite starts charging the battery again.

In the model, there are three stages- capture of the target images, process the images and transfer via downlink to the ground station. Each of these stages has different processing requirements. The acquisition and downlink can be performed only during target time periods.

There are a number of analysis being performance:

1. What is the system architecture configuration and speeds.
2. What should be the downlink speed?
3. How much is the power consumption?
4. How many targets can be acquired and processed.
5. What is the memory/storage requirements?
6. What is the array size i.e. what is the power charging rate required?

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