GPS receiver with Raw Data Measurements



Hello Everyone!
I am trying to find a cheap GPS receiver, that will send to my
listening PC the actual measurements from the satellites
(phase measurements, pseudorange etc).
Specifically, i am interested in using the GPS measurements
to calculate my own GPS position.
I imagine a serial/usb device, that would send the data in ASCII
or smt format, so that i can easily utilize them
I tried to find something in the web, but i was able only to find
hack solutions (take a normal receiver, hack it down to isolate the signals,
connect them via a complicated hardware way to something in the PC)
Does anybody has something in mind?
Is there a product, i can plug in my PC, and have raw measurements on my screen?
MTIA
Grigoris Lionis

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