Gpsd
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== AGPS == | == AGPS == | ||
− | == PMB 2520 == | + | == PMB 2520 Hammerhead == |
+ | The PMB 2520 Hammerhead is a IC sulution for GPS that producted by the Infineon Technologies. It allows the usage of assistance data by surpporting A-GPS standards. | ||
+ | |||
+ | === Modules of the Hammerhead === | ||
+ | |||
+ | The Hammerhead consists of the following modules: | ||
+ | *RF front-end with on-chip, high gain and low noise, LNA, I/Q mixers, on-chip polyphase complex IF filter, digitally controlled AGC, and 3-bits ADC for the I and Q paths. | ||
+ | *Sigma-Delta RF PLL with on-chip PCO and on-chip loop filter. | ||
+ | *Embedded PLL and NCO for baseband clock generation. | ||
+ | *Multiple channels digital mixers and parallel correlator engines to enable real time correlation of the PRN code for up to 14 satellites. | ||
+ | *Post processor including peak detection logic | ||
+ | *SRAM for storing correlation results | ||
== GPS on GTA01 == | == GPS on GTA01 == |
Revision as of 03:37, 8 February 2007
Contents |
GPS
GPS(Global Positioning System)
AGPS
PMB 2520 Hammerhead
The PMB 2520 Hammerhead is a IC sulution for GPS that producted by the Infineon Technologies. It allows the usage of assistance data by surpporting A-GPS standards.
Modules of the Hammerhead
The Hammerhead consists of the following modules:
- RF front-end with on-chip, high gain and low noise, LNA, I/Q mixers, on-chip polyphase complex IF filter, digitally controlled AGC, and 3-bits ADC for the I and Q paths.
- Sigma-Delta RF PLL with on-chip PCO and on-chip loop filter.
- Embedded PLL and NCO for baseband clock generation.
- Multiple channels digital mixers and parallel correlator engines to enable real time correlation of the PRN code for up to 14 satellites.
- Post processor including peak detection logic
- SRAM for storing correlation results