The Controlling System Of Antenna Platform Based On TMS320F2812

This paper focuses on the design of motion controlling system based onTMS320F2812 which is applied in the field of RADAR antenna platform. SAR isa kind of high resolution radar and it will be influenced by the atmospheredisordering behaved as the random changing of the three angles such as drift,rolland pitch. So it can not satisfy the needs of antenna to guarantee it's stabilization.Only compensate the error caused by angle movement can we get high resolutionimages. The classic method of compensation is to use stable platform. We fix theplatform at the bottom of plane cabin and in the antenna cover. Then we put theantenna on the platform. We get the error data through inertia component.And we make the track loop with servo system and driver of the platformcontrolling system. After that, we control the antenna platform to move theinverse direction. It equates that the platform insulates angle movement, Atlast,we achieve the purpose to stabilize the antenna direction.This system uses DSP to design digital controlling system of antennaplatform. Digital system is very convenient and flexible for system debugging.And it increases the performance of system. The digital system has been used inproject and it performed very well.This paper focuses on the hardware circuit design, including the circuit andpcb board and some proaming. Because we use the digital system, so it is verydifficult for us to achieve the aim. But we did it in time.Of course, the full digital system of antenna platform has much moreadvance than the half digital system. So it is the developing tide of controllingsystem and in the same way, it is our object.