Difference between steering and angle parameter!

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Hassam Mahmood
Hassam Mahmood 2016-10-6
编辑： Hassam Mahmood 2016-10-7
What is the differencd between steer and Ang inputs of 'Narrowband tx array' block. According to my understanding Ang input is for radiating signal in that particular Angle direction e.g Azimuth 30
Then why steering is used if we can point the tx to different directions while using Different Angles?

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回答（1 个）

Honglei Chen
Honglei Chen 2016-10-6
The input 'Ang' specifies the direction at which the signal is transmitted.
The input 'Steer' only applies when you have a subarray in the block. So if you are not using a subarray, then you don't have to worry about it. The parameter is there because if you have a subarray, it is possible to steer subarrays via phase shifters and the parameter 'Steer' specifies which direction to specify those subarrays.
HTH
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Honglei Chen
Honglei Chen 2016-10-7
Could you let me know how you use it to get the out of memory error? Your code above errors out because your elem_pos dimension is wrong. Once I fixed it, I have no issue getting a result.
Hassam Mahmood
Hassam Mahmood 2016-10-7
编辑：Hassam Mahmood 2016-10-7
I used simulink blocks to simulate my model. Steps are as follows :
1) I transmitted 50000by1 signal to Function Block and Narrowband tx array block.
2) Narrowband tx array block has W port which is being fed by conjugate of vector array. Firstly I computed for 20by20 array but an error popped out saying 'expected dimensions to be 400by1. So when I changed my elem_pos array to 400by1 but got memory out error.
3) The output from Narrowband tx array is still 50000by1 which I don't know is correct or not?
4) On the receiving side I am using Rx narrowband array block and same Output from function block is being fed to Rx array input port of W. This port (W) is having dimensions of 400by1
Questions : How did you fix elem_pos dimensions?
And the procedures I mentioned, are they correct to scan my beam as I am using same W port values for Rx narrowband as well?
I hope I explained it fully, if not then I can attach my model

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