Re: [SAC-HELP] 回复:sac-help Digest, Vol 29, Issue 1

[George Helffrich]

Dear All -

	Whether you want to include gain and sensitivity in your polezero 
CONSTANT is a matter of choice.  It depends on how clearly you want to 
separate the frequency dependent from the frequency independent parts 
of the response.  My suggestion was to put the frequency dependent part 
into the polezero CONSTANT value.  If you choose to do this, you can 
use the SCALE header field to include the frequency independent parts 
of the gain.

On 14 Nov 2007, at 11:18, FANG Lihua wrote:

>  
> Dear all,
>  
> I agree with Apostolos Agalos. I also think the Constant should be 
> derived from the
>  multiplication of the Sensitivity with A0.
>  
> I think the following method should be right when calculating the 
> CONSTANT.
>  
> CONSTANT=A0×Sensor Sesivity × Digitiser Gain × 2*pi
>  
> here A0 is in rad/sec Unit,Digitiser Gain is V/ms.
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								George Helffrich
								george at geology.bristol.ac.uk
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