PCodeConst.hpp File Reference

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Namespaces
namespace	gpstk
Enumerations
enum	codeType { P_CODE, Y_CODE, BOTH }
	PCodeConst.hpp maintains a variety of "magic numbers" related to P-code generation and used throughout the P-code generator. More...
Variables
const int	MAX_BIT = 32
	Number of bits assumed to be in a unsigned long int.
const int	MAX_PRN_CODE = 37
	Maximum PRN Code number (1-n).
const long	NUM_6SEC_WORDS = 1918125
	Number of 4 byte unsigned ints necessary to hold 6 sec of P-code.
const long	NUM_X2_WORDS = 1918131
	Number of 4 byte unsigned ints necessary to hold an X2 sequence (with leading delay).
const unsigned int	X1A_INIT = 0x0248
	INIT variables are starting conditions of 12-bit registers (IS-GPS-200).
const unsigned int	X1B_INIT = 0x0554
const unsigned int	X2A_INIT = 0x0925
const unsigned int	X2B_INIT = 0x0554
const unsigned int	X1A_TAPS = 0x0CA0
	TAPS variables denote which stages of 12-bit registers are XOR'd.
const unsigned int	X1B_TAPS = 0x0F93
const unsigned int	X2A_TAPS = 0x0FDD
const unsigned int	X2B_TAPS = 0x098E
const int	XA_MAX_EPOCH = 3750
	X?_MAX_EPOCH is the maximum number of epochs in a sequence.
const int	XB_MAX_EPOCH = 3749
const int	XA_COUNT = 4092
	X?_COUNT is the number of bits in an epoch.
const int	XB_COUNT = 4093
const long	XA_EPOCH_DELAY = 0
	XA_EPOCH_DELAY and XB_EPOCH_DELAY allow for precession of X1B and X2B wrt to X1A and X2A at the end of each X1A epoch and X2A epoch.
const long	XB_EPOCH_DELAY = 343
const long	X2A_EPOCH_DELAY = 37
	The 37 chip delay at the end of every X2A epoch.

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Enumeration Type Documentation

enum codeType

PCodeConst.hpp maintains a variety of "magic numbers" related to P-code generation and used throughout the P-code generator. Enumeration values: P_CODE  Y_CODE  BOTH  Definition at line 54 of file PCodeConst.hpp. Referenced by CodeSmoother::CodeSmoother(), CodeBuffer::getPYFlag(), OneFreqCSDetector::OneFreqCSDetector(), PCSmoother::PCSmoother(), PhaseCodeAlignment::PhaseCodeAlignment(), PhaseCodeAlignment::Process(), PCSmoother::Process(), OneFreqCSDetector::Process(), CodeSmoother::Process(), PhaseCodeAlignment::setCodeType(), OneFreqCSDetector::setCodeType(), and CodeSmoother::setCodeType().

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Variable Documentation

const int MAX_BIT = 32

Number of bits assumed to be in a unsigned long int. Definition at line 57 of file PCodeConst.hpp. Referenced by GenXSequence::GenXSequence(), CodeBuffer::getBit(), main(), X2Sequence::operator[](), and GenXSequence::operator[]().

const int MAX_PRN_CODE = 37

Maximum PRN Code number (1-n). Definition at line 60 of file PCodeConst.hpp.

const long NUM_6SEC_WORDS = 1918125

Number of 4 byte unsigned ints necessary to hold 6 sec of P-code. Definition at line 63 of file PCodeConst.hpp. Referenced by main().

const long NUM_X2_WORDS = 1918131

Number of 4 byte unsigned ints necessary to hold an X2 sequence (with leading delay). Definition at line 66 of file PCodeConst.hpp. Referenced by X2Sequence::allocateMemory(), and X2Sequence::operator[]().

const unsigned int X1A_INIT = 0x0248

INIT variables are starting conditions of 12-bit registers (IS-GPS-200). Definition at line 69 of file PCodeConst.hpp. Referenced by X1Sequence::allocateMemory().

const unsigned int X1A_TAPS = 0x0CA0

TAPS variables denote which stages of 12-bit registers are XOR'd. Definition at line 75 of file PCodeConst.hpp. Referenced by X1Sequence::allocateMemory().

const unsigned int X1B_INIT = 0x0554

Definition at line 70 of file PCodeConst.hpp. Referenced by X1Sequence::allocateMemory().

const unsigned int X1B_TAPS = 0x0F93

Definition at line 76 of file PCodeConst.hpp. Referenced by X1Sequence::allocateMemory().

const long X2A_EPOCH_DELAY = 37

The 37 chip delay at the end of every X2A epoch. Definition at line 96 of file PCodeConst.hpp. Referenced by X2Sequence::allocateMemory(), and SVPCodeGen::getCurrentSixSeconds().

const unsigned int X2A_INIT = 0x0925

Definition at line 71 of file PCodeConst.hpp. Referenced by X2Sequence::allocateMemory().

const unsigned int X2A_TAPS = 0x0FDD

Definition at line 77 of file PCodeConst.hpp. Referenced by X2Sequence::allocateMemory().

const unsigned int X2B_INIT = 0x0554

Definition at line 72 of file PCodeConst.hpp. Referenced by X2Sequence::allocateMemory().

const unsigned int X2B_TAPS = 0x098E

Definition at line 78 of file PCodeConst.hpp. Referenced by X2Sequence::allocateMemory().

const int XA_COUNT = 4092

X?_COUNT is the number of bits in an epoch. Definition at line 85 of file PCodeConst.hpp. Referenced by X2Sequence::allocateMemory(), X1Sequence::allocateMemory(), and main().

const long XA_EPOCH_DELAY = 0

XA_EPOCH_DELAY and XB_EPOCH_DELAY allow for precession of X1B and X2B wrt to X1A and X2A at the end of each X1A epoch and X2A epoch. End of week delays are handled elsewhere. Definition at line 92 of file PCodeConst.hpp. Referenced by X2Sequence::allocateMemory(), X1Sequence::allocateMemory(), and main().

const int XA_MAX_EPOCH = 3750

X?_MAX_EPOCH is the maximum number of epochs in a sequence. Definition at line 81 of file PCodeConst.hpp. Referenced by main().

const int XB_COUNT = 4093

Definition at line 86 of file PCodeConst.hpp. Referenced by X2Sequence::allocateMemory(), and X1Sequence::allocateMemory().

const long XB_EPOCH_DELAY = 343

Definition at line 93 of file PCodeConst.hpp. Referenced by X2Sequence::allocateMemory(), and X1Sequence::allocateMemory().

const int XB_MAX_EPOCH = 3749

Definition at line 82 of file PCodeConst.hpp.

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