RECEIVER APPARATUS, RECEPTION METHOD AND COMPUTER PROGRAM

• US 20130114646A1
• Filed: 08/10/2011
• Published: 05/09/2013
• Est. Priority Date: 08/17/2010
• Status: Abandoned Application

• Current Assignee: Sony Corporation (Sony Group Corp.)
• Original Assignee: Sony Corporation (Sony Group Corp.)
• Inventors: Nitta, Manabu
• Application Number:
  US13/809,006
• Publication Number:
  US 20130114646A1
• Time in Patent Office: Days
• US Class Current: 375/147
• CPC Class Codes: G01S 19/246 involving long acquisition integration times, extended snapshots of signals or methods specifically directed towards weak signal acquisition
• CPC Class Codes: G01S 19/30 code related G01S19/246 takes precedence
• 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
• CPC Class Codes: H04B 2201/70715 with application-specific features

Abstract

A receiver apparatus including a receiving unit that receives a global positioning system (GPS) signal from a satellite in a GPS, a multiplying unit that multiplies the GPS signal received by the receiving unit by pseudo navigation data and an integrating unit that performs a synchronous addition on a signal, in which navigation data is removed from the GPS signal, serving as an output from the multiplying unit.

Claims

1. A receiver apparatus, comprising:

a receiving unit that receives a global positioning system (GPS) signal from a satellite in a GPS;

a multiplying unit that multiplies the GPS signal received by the receiving unit by pseudo navigation data; and

an integrating unit that performs a synchronous addition on a signal, in which navigation data is removed from the GPS signal, serving as an output from the multiplying unit.

2. The receiver apparatus according to claim 1, further comprising:

a storage unit that stores the navigation data included in the GPS signal received by the receiving unit; and

a generating unit that generates the pseudo navigation data using the navigation data stored in the storage unit.

3. The receiver apparatus according to claim 2,

wherein the generating unit calculates a probability of occurrence of each of all bit patterns of a bit string of a bit length N in the navigation data, and decides a bit string of a bit length N to be used as the pseudo navigation data based on a calculation result.

4. The receiver apparatus according to claim 2,

wherein the generating unit calculates an expectation value of a gain of a result of the synchronous addition when a plurality of bit strings of the bit length N that differ in a bit pattern are used as the pseudo navigation data, and decides a plurality of bit strings of the bit length N that differ in the bit pattern which is to be used as the pseudo navigation data based on a calculation result.

5. The receiver apparatus according to claim 3,

wherein the generating unit calculates a number of bit inversions of each of all the bit patterns of the bit string of the bit length N, and decides a bit string of the bit length N to be used as the pseudo navigation data based on a calculation result.

8. The receiver apparatus according to claim 3,

wherein the generating unit calculates an expectation value of a gain of a result of the synchronous addition when a plurality of bit strings of the bit length N that differ in a bit pattern are used as the pseudo navigation data, and decides a plurality of bit strings of the bit length N that differ in the bit pattern which is to be used as the pseudo navigation data based on a calculation result.

9. The receiver apparatus according to claim 4,

wherein the generating unit calculates a number of bit inversions of each of all the bit patterns of the bit string of the bit length N, and decides a bit string of the bit length N to be used as the pseudo navigation data based on a calculation result.

10. The receiver apparatus according to claim 8,

wherein the generating unit calculates a number of bit inversions of each of all the bit patterns of the bit string of the bit length N, and decides a bit string of the bit length N to be used as the pseudo navigation data based on a calculation result.

6. A reception method, comprising:

receiving a global positioning system (GPS) signal from a satellite in a GPS;

multiplying the GPS signal received in the step of receiving the GPS signal by pseudo navigation data; and

integrating for performing a synchronous addition on a signal, in which navigation data is removed from the GPS signal, serving as an output in the step of multiplying the GPS signal.

7. A non-transitory computer readable medium including computer executable instruction for causing a computer to execute:

receiving a global positioning system (GPS) signal from a satellite in a GPS;

multiplying the GPS signal received in the step of receiving the GPS signal by pseudo navigation data; and

integrating for performing a synchronous addition on a signal, in which navigation data is removed from the GPS signal, serving as an output in the step of multiplying the GPS signal.