Case K44 Spécifications télécharger pdf (Page 56)

User InterfaceGPS and Assisted GPS

42Operating Manual 1171.5248.12 ─ 15

The C/A code (f_ca = 1.023 MHz) is provided for civilian purposes. The P-code (f_p =

10.23 MHz) is provided for military purposes. They are used as spreading codes for the

navigation data which is transmitted at a rate of 50 baud.

Note: For satellite 2, 3, and 4, the only available Ranging Code is C/A and cannot be

changed.

"C/A"

Carrier L1 (f_L1= 1.57542 GHz) respectivelly carrier L2 (f_L2 = 1.2276

GHz) is modulated by C/A-code (BPSK).

"C/A + P"

(only available for Satellite 1)

Carrier L1 respectivelly carrier L2 is modulated by C/A code and P-code

(QPSK).

"P"

(only available for Satellite 1)

Carrier L2 respectivelly carrier L2 is modulated by P-code (BPSK).

SCPI command:

[:SOURce<hw>]:BB:GPS:SATellite<st>:RCODe on page 96

Space Vehicle ID

Enters the ID of the satellite to be simulated. This value is used to generate the corre-

sponding C/A respectivelly P-code.

37 IDs are defined whereas 32 codes are used for identifying satellites.

If "Real Navigation Data" is used, only the valid IDs which are listed in the almanac are

selectable.

For arbitrary data, any ID can be selected.

SCPI command:

[:SOURce<hw>]:BB:GPS:SATellite<st>:SVID on page 97

Configure Navigation Message

(R&S SMx/AMU instruments only)

Call the "Navigation Message Configurations" dialog (see chapter 3.3, "Navigation Mes-

sage Configuration", on page 46).

Note: This parameter is enabled only for Localization mode.

SCPI command:

n.a.

Time Shift / CA-Chips/40

(R&S SMx/AMU instruments only)

Sets a delay of the selected satellite relative to the other satellites. The time shift is set

in oversampled CA chips (Oversamling = 40).

In Localization mode, this parameter is not configurable and is set automatically depend-

ing on the simulated Geographic Location and on the satellite's orbit.

Note: The value displayed is the initial time shift at the beginning of the simulation. This

value will be updated internally to implement moving satellites and receivers. However

the value displayed is not updated.

SCPI command:

[:SOURce<hw>]:BB:GPS:SVID<st>:TSCHips on page 99

Satellite Configuration

1 2 ... 51 52 53 54 55 56 57 58 59 60 61 ... 164 165

Commentaires sur ces manuels

Pas de commentaire

Case K44 Spécifications Page 56

Commentaires sur ces manuels

Produits connexes et manuels pour Tondeuses à gazon Case K44