[time-nuts] Re: Composite sky GPS - with an added digression

Lux, Jim jim at luxfamily.com
Sun Jul 2 00:28:08 UTC 2023


On 7/1/23 9:42 AM, Lux, Jim via time-nuts wrote:
> On 6/30/23 6:40 PM, glen english LIST via time-nuts wrote:
>> Hi Jim
>>
>> Seems this question of mine is well covered in  the ether.
>>
>> Yes, might not be as bad as I think. I'll write a program to compute 
>> various scenarios and also will be interested to see how the fixes 
>> get affected  with loss of signal over some AZEL patch of the sky. 



Here's some samples with the two antennas (cos^2() pattern) angled at 0 
(both pointing at zenith), 45 and 60 degrees off zenith. The two 
antennas are 5 wavelengths apart (1 meter for 1500 MHz L1)

I clamped the antenna patterns at -20dB (in reality it would be some 
sort of weird pattern with lots of lobes and nulls, but all small)


Python code to generate it also attached.
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