Method and apparatus for receiving GPS/GLONASS signals

• US 20050276316A1
• Filed: 05/26/2005
• Published: 12/15/2005
• Est. Priority Date: 11/19/1997
• Status: Abandoned Application

• Current Assignee: Alain Rabaeijs, Bert Gyselinckx, Eric Aardoom, Marc Engels
• Original Assignee: Alain Rabaeijs, Bert Gyselinckx, Eric Aardoom, Marc Engels
• Inventors: Aardoom, Eric, Rabaeijs, Alain, Gyselinckx, Bert, Engels, Marc
• Application Number:
  US11/139,128
• Publication Number:
  US 20050276316A1
• Time in Patent Office: Days
• US Class Current: 375/148
• CPC Class Codes: G01S 19/22 Multipath-related issues
• CPC Class Codes: G01S 19/30 code related G01S19/246 takes precedence
• CPC Class Codes: G01S 19/32 Multimode operation in a single same satellite system, e.g. GPS L1/L2
• CPC Class Codes: G01S 19/33 Multimode operation in different systems which transmit time stamped messages, e.g. GPS/GLONASS
• CPC Class Codes: G01S 19/37 Hardware or software details of the signal processing chain
• CPC Class Codes: H04B 1/707 using direct sequence modulation

Abstract

An apparatus for processing received spread spectrum signals modulated with a unique pseudo-random code is disclosed. In one embodiment, the apparatus comprises i) a plurality of channel modules each including a correlator, ii) a circuit configured to hierarchically chain a plurality of the channel modules in series, wherein at least one of a code, control signals and carrier signals is passed from one channel module of the chain to the next, and iii) a selector configured to select the at least one of the code, control signals and carrier signals, to be transmitted to the next channel module in the chain with a delay or without a delay.

Claims

1. An apparatus for processing received spread spectrum signals modulated with a unique pseudo-random code, the apparatus comprising:

a plurality of channel modules each including a correlator; and

means for i) hierarchically chaining a plurality of the channel modules in series, and ii) selecting one channel module from at least two candidate channel modules for the next channel module of the chain.