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System Parameter
Value Units Notes
Channel access mode  CDMA  
Rx Sensitivity  -159 (C/A code track)  dBm
Symbol Rate/Chip rate  1.023(C/A code)  Mbps
Data Rate  50  bps
Operating Frequencies  1.57542 (L1)  GHz
Maximum Rx input  -25  dBm

Circuit Sage Tools
Mathcad routines for RF Circuit Design:
S-parameters, parameter conversion, stability, noise, power gain
Mathcad routines for cascaded system design:
Noise and linearity calculations for a receiver architecture

Online Tools
RFSim99 is a free linear S-parameter based circuit simulator offering schematic capture, simulation, 1 port and 2 port S-parameter display and file support, tolerance analysis, stability circles, and much more.
Nathan Iyer's Cascade:
Calculate Gain, NF, IIP3, Sensitivity from individual data of receiver's blocks

Online Articles
GPS receiver in 0.18 um:
From 12th Asia and South Pacific Design Automation Conference (2007). Presentation from Unistar Micro Technology
Maxim GPS receiver design app notes:
Using Maxim's parts of course

Global Positioning Systems, Inertial Navigation, and Integration by M. Grewal:
from description: "...provides engineers, computer scientists, and others with a working familiarity with the theory and contemporary applications of Global Navigation Satellite Systems (GNSS), Inertial Navigational Systems (INS), and Kalman filters. Throughout, the focus is on solving real-world problems, with an emphasis on the effective use of state-of-the-art integration techniques for those systems, especially the application of Kalman filtering. To that end, the authors explore the various subtleties, common failures, and inherent limitations of the theory as it applies to real-world situations, and provide numerous detailed application examples and practice problems, including GNSS-aided INS, modeling of gyros and accelerometers, and SBAS and GBAS..."
Global Positioning System: Theory and Practice:
from an Amazon reviewer: "...This text provides a great introduction to the *theory* of GPS. It is rigorous on the mathematics so I wouldn't recommend it for someone who just needs a general understanding of how GPS operates or an understanding of the applications of GPS (e.g. software project managers or other personnel who aren't actually implementing sat or receiver software). For those who need to dive into the theory and algorithms with of GPS, you should have a firm understanding of trigonometry, linear algebra (matrix operations) and basic calculus before reading this text. As one reviewer pointed out, it does cover the application of GPS to surveying in depth..."