NAME

GPS::OID - Package for GPS PRN - Object ID conversions.

SYNOPSIS

  use GPS::OID;
  my $obj = GPS::OID->new();
  print "PRN: ", $obj->prn_oid(22231), "\n";
  print "OID: ", $obj->oid_prn(1), "\n";

DESCRIPTION

This module maps GPS PRN number to Satellite OID and vice versa.

Object Identification Number (OID)

The catalog number assigned to the object by the US Air Force. The numbers are assigned sequentially as objects are cataloged. This is the most common way to search for TLE data on this site.

Object numbers less then 10000 are always aligned to the right, and padded with zeros or spaces to the left.

Pseudo Random Numbers (PRNs)

GPS satellites are identified by the receiver by means of PRN-numbers. Real GPS satellites are numbered from 1 - 32. WAAS/EGNOS satellites and other pseudolites are assigned higher numbers. The PRN-numbers of the satellites appear on the satellite view screens of many GPS receivers.

CONVENTIONS

Function naming convention is "format of the return" underscore "format of the parameters."

CONSTRUCTOR

new

The new() constructor

  my $obj = GPS::OID->new();

METHODS

initialize

prn_oid

PRN given Object ID.

  my $prn=prn_oid(22231);

oid_prn

Object ID given PRN.

  my $oid=oid_prn(1);

listprn

List all known PRNs.

  my @prn=$obj->listprn;
  my $prn=$obj->listprn;

listoid

List all known OIDs.

  my @oid=$obj->listoid;
  my $oid=$obj->listoid;

data

OID to PRN hash reference

  my $data=$self->data;

overload

Adds or overloads new OID/PRN pairs.

  $obj->overload($oid=>$prn);

reset

Resets overloaded OID/PRN pairs to package defaults.

  $obj->reset;

TODO

BUGS

Please send issues to the gpsd-dev email list.

LIMITS

AUTHOR

Michael R. Davis qw/perl michaelrdavis com/

LICENSE

This library is free software; you can redistribute it and/or modify it under the same terms as Perl itself.