SkyTraq from Taiwan just came out with S4554 GNS-LP, a new low power GLONASS and GPS receiver. This new chip can track 88 satellites at once and has a 29 second cold start TTFF (time to first fix). Once locked in it can work with signals at -159dBm, and -145dBm when cold starting.
S4554GNS-LP is quite flexible; it supports GPS-only, GLONASS-only, and GLONASS + GPS modes. It embeds a dedicated search engine which is capable of performing 10 million time-frequency hypothesis testing per second. It can operate in temperature ranges from -40 to +85 C… via
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