Signal processing system for satellite positioning signals

A satellite positioning system (SPS) receiver, comprising:

• at least one processor and a signal processing system coupled to receive satellite positioning system SPS data and to operate under a plurality of operational modes including a low resolution operational mode and a high resolution operational mode, wherein the high resolution operational mode has a higher resolution than the low resolution operational mode for determining a position of the electronic system, wherein the signal processing system includes:
• a signal processing subsystem and a fast Fourier transform (FFT) subsystem that are automatically and dynamically configurable in response to the operational modes,
• wherein the signal processing subsystem includes at least one matched filter having a number of correlators automatically configured in accordance with a first configuration in the low resolution operational mode and a second configuration in the high resolution operational mode,
• wherein the fast Fourier transform (FFT) subsystem includes at least one of a number of inputs and a transform size automatically configured in accordance with a first configuration in the low resolution operational mode and a second configuration in the high resolution operational mode.

An satellite positioning system (SPS) receiver, comprising:

• at least one processor and a signal processor operating according to a plurality of operational modes including a low resolution operational mode and a high resolution operational mode, wherein the high resolution operational mode has a higher resolution than the low resolution operational mode for determining a position of the SPS receiver, and wherein the signal processor includes:
• a signal processing subsystem,
• a fast Fourier transform (FFT) subsystem, and
• a memory subsystem,
• wherein each of the subsystems is dynamically and independently configurable in response to the operational modes and is coupled to receive SPS data,
• wherein a first controller couples to control transfer of data among the signal processing subsystem and the FFT subsystem via the memory subsystem,
• wherein configurability of the memory subsystem includes configuring the memory subsystem into regions in accordance with a first configuration in the low resolution operational mode and a second configuration in the high resolution operational mode, and
• wherein the regions are each accessed in accordance with a first method in the low resolution operational mode and a second method in the high resolution operational mode.

An satellite positioning system (SPS) receiver, comprising:

• means for controlling processing;
• means for processing signals coupled to the means for controlling processing and operating in accordance with operational modes of the system, the operational modes including a low resolution operational mode and a high resolution operational mode having a higher resolution than the low resolution operational mode, the means for processing signals including:
• means for receiving SPS data and producing input data samples;
• means for generating coherent data using the input data samples, wherein the means for generating coherent data includes at least one matched filter means having a number of correlators automatically configured in accordance with a first configuration in the low resolution operational mode and a second configuration in the high resolution operational mode;
• means for generating fast Fourier transforms (FFTs) having at least one of a number of inputs and a transform size automatically configured in accordance with a first configuration in the low resolution operational mode and a second configuration in the high resolution operational mode;
• and
• means for storing data having memory allocation that is automatically allocated in accordance with a first configuration in the low resolution operational mode and a second configuration in the high resolution operational mode.