button to bring up the Multipath Profile Configuration dialog. The number of taps configured is displayed on the button.Range: 1-32
Display the index of a specific satellite channel.
Use the check box for each satellite channel to set whether the satellite is part of a group. When the satellites are part of a group, a parameter change to one satellite changes that parameter for all satellites in the group.
Range: G1 - G32 for GPS, R1 - R24 for GLONASS, E1 - E30 for Galileo, B1 - B35 for Beidou
Couplings:
Navigation mode—read only data controlled by the scenario file and updated every second during scenario playback
Static Test mode—initialized by the scenario file and editable
Specify the space vehicle ID that is simulated on the selected satellite channel. Disabled satellites show as in a grayed out cell. The active SVs are identified by their ID and constellation. The constellation type is easily identified by its letter and color designation:
GPS is green with the letter 'G'
GLONASS is blue with the letter 'R'
Galileo is orange with the letter 'E'
Beidou is orange with the letter 'B'
In Static mode, you can manually enable additional satellites. When enabled, the grayed out cell turns green with a GPS 'G' designation and displays the SV ID equal to the channel number. If desired, manually change the SV ID constellation designation and number by entering a constellation letter and number.
Choice: On | Off
Couplings: In Navigation mode—enable or disable a satellite channel in current playing scenario. It’s read-only for the unused satellite channel showing as ‘N/A’.
Enable or disable a specific satellite channel. Only enabled satellite channels contribute to the output signal. When a channel is turned off, all the other properties associated with this channel becomes inactive.
This property displays the frequency channel on which the satellite signal is transmitted.
|
GPS |
Only supports L1 frequency centered at 1575.42 MHz. Set the signal generator RF frequency to 1.57542 GHz. |
|
GLONASS |
Supports frequency channel number of L1 band, which is: L1 = 1602 MHz + (n * 0.5625) MHz n = the frequency channel number ( n = -7, -6, ...0, ...6)
Set the signal generator RF frequency to 1.57542 GHz. Frequency Offsets for GLONASS channels are automatically applied to the signal. |
|
Galileo |
Only supports E1 frequency centered at 1575.42 MHz. Set the signal generator RF frequency to 1.57542 GHz. |
|
Beidou |
Only supports B1 frequency centered at 1561.098 MHz. Set the signal generator RF frequency to 1.561098 GHz. |
Range: -40 dB to 0 dB
Default: 0 dB
Couplings: This property is configurable only for active satellite channels.
Set the relative power scale for a specific satellite channel. Adjust this scale value to control the relative power levels among satellite channels.
Range: -200 dB to 40 dB
Couplings: This property is always read-only and updated when Enabled state or Relative Power Scale of a satellite channel is changed. In Navigation mode, it's also updated every 5 seconds during scenario playback.
This property displays the RF output power of each satellite in dBm. A power level of -200 dBm indicates that no satellite signal is being transmitted on that channel.
The calculation of this value depends on the ALC setting of the external signal generator:
|
ALC On |
The total output power of all satellites is leveled to the amplitude of the external signal generator and remains unchanged. This power is distributed to each satellite based on the Relative Power Scale setting. |
|
ALC Off |
The software automatically sets the Power Search Settings used in the power calibration. After performing the power calibration, the power of each satellite is leveled to a proper value based on its Relative Power Scale (dB) value and remains unchanged. Turning on/off satellites or changing the Relative Power Scale (dB) changes the total output power |
When AWGN is turned on, the values under the Power (dBm) column includes satellite power and noise power. So a correction must be done to calculate the actual power of a satellite:
Satellite power = Power (dBm) – (Signal Generator Amplitude – Total Signal Power)
Total Signal Power can be found under IO > AWGN settings
Couplings: This property is only visible in Navigation mode and will be updated automatically every 2 seconds.
Pseudorange is the pseudo distance between a satellite and a navigation satellite receiver for instance Global Positioning System (GPS) receivers.
This property displays the instant pseudorange of the satellite that is being simulated.
Couplings: This property is only visible in Navigation mode.
Enter a user-made error to the pseudorange of the satellite.
Default: 0X3FFFFFFF
Couplings: This property is only visible in Static Test mode and configurable for active satellite channels.
Enter the data word in Hex value:
Range: 0 chip - 100000 us
Couplings: This property is only visible in Static Test mode and configurable for active satellite channels.
Enter a time shift value in micro-seconds for a specific satellite channel.
Range: -125 kHz to 125 kHz
Couplings:
In Navigation mode, this property displays the instant Doppler shift of a satellite .
In Static Test mode, it is configurable for the active satellites.
Enter a Doppler shift value in Hz for a specific satellite channel.
Click the button to bring up the Multipath Profile Configuration dialog. The number of taps configured is displayed on the button.
User can edit, delete and modify the Multipath Profile Configuration in real-time.
Once configured, multipath channels will be appended to the end of the satellite channel list, with a * mark in SV ID.(for example, SV ID G5* indicates a multipath channel for line-of-sight satellite G5.). The software does not allow configuring multipath channels on the appended multipath channels, so the nTaps button is disabled for these channels.