jackobian

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• Sir, In fact what i did and trying to do is this: 1- I have andrew source code as every one 2- i build the whole circuit of andrew, and it works very well with me, i receive signal from sats, and get my position. 3- i want to use gp2015 instead of a…

  in Is it possible to transform kiwi sdr on Xilinx Zynq FPGA a single chip solution [for GPS only] Comment by jackobian May 2018
• Sir, In fact what i did and trying to do is this:1- I have andrew source code as every one2- i build the whole circuit of andrew, and it works very well with me, i receive signal from sats, and get my position.3- i want to use gp2015 instead of andr…

  in Is it possible to transform kiwi sdr on Xilinx Zynq FPGA a single chip solution [for GPS only] Comment by jackobian April 2018
• Sir, I have test 5.691 and 4.309. But also SNR<15

  in Is it possible to transform kiwi sdr on Xilinx Zynq FPGA a single chip solution [for GPS only] Comment by jackobian April 2018
• No. i mean look up table for sin ,cos function [1,1,0,0]. then 4*FC/Fs?

  in Is it possible to transform kiwi sdr on Xilinx Zynq FPGA a single chip solution [for GPS only] Comment by jackobian April 2018
• Sir. in search.cpp i found that lookup table does not repeat periodically.  it should be something like 0,1,2,3.0,1,2,3.....etc, but in my case it is random. does that affect my design?

  in Is it possible to transform kiwi sdr on Xilinx Zynq FPGA a single chip solution [for GPS only] Comment by jackobian April 2018
• Hi, Sir. I have done what you adviced me to do and  i got 0x1234 Ok both on asm and verilog, but i still get snr<15???!

  in Is it possible to transform kiwi sdr on Xilinx Zynq FPGA a single chip solution [for GPS only] Comment by jackobian April 2018
• i have tried this, but nothing happen ,snr always <15

  in Is it possible to transform kiwi sdr on Xilinx Zynq FPGA a single chip solution [for GPS only] Comment by jackobian April 2018
• Yes Sir I pass it through Hard-limiting (1-bit ADC)  "LMH7220" as in Andrew aholme(http://www.aholme.co.uk/GPS/Main.htm) , so i have 1-bit signal with 4.309MHz output. i want to pass it to fpga. i did that but it stuck in search.cpp,

  in Is it possible to transform kiwi sdr on Xilinx Zynq FPGA a single chip solution [for GPS only] Comment by jackobian April 2018
• Sir i want to use if output (4.309Mhz) on pin 1 of gp2015 not mag or sig (pin 14,pin 15) so i do not need 40/7 clock

  in Is it possible to transform kiwi sdr on Xilinx Zynq FPGA a single chip solution [for GPS only] Comment by jackobian April 2018
• I have gp2015 rf front end, and i need to use it instead of SE4150, its out putif is 4.309MHz, when i use it with andrew aholme . no thing appear on the screen. what should i do? what is wrong. i know the only  thing have to change is Fc=2.6e6, beco…

  in Is it possible to transform kiwi sdr on Xilinx Zynq FPGA a single chip solution [for GPS only] Comment by jackobian April 2018