Saluki NS94XX series of high-performance navigation signal simulators adopts an expandable hardware platform, open control protocols and communication protocols, which can meet the requirements of flexible architecture test systems. The device can be used in cascade with trajectory simulators, interference simulators and third-party signal sources, and has the ability to simulate and output multi-system, multi-carrier and multi-beam signals. The device supports the global signal system of the Beidou satellite navigation system, provides satellite navigation signal simulation for the four major satellite navigation systems in the world, supports the signal simulation output of any combination of full-frequency points of constellations such as BDS/GPS/GLONASS/Galile0/QZSS/IRNSS, and has the ability to provide high-stability standard 1PPS pulse signals and 10MHz clock signal output. The device has multi-beam output capability, each port supports 32 channel output, each channel supports the independent output capability of a single satellite signal, and the output satellite number is configurable; it supports multi-carrier signal simulation output, which can meet the application requirements of multi-aircraft formation flight navigation test and various multi-terminal collaborative navigation test.
Key Features
Static and dynamic trajectory generation capabilities can simulate the motion characteristics of static and dynamic carriers such as satellites (GEO/MEO/HEO/LEO), vehicles, ships, and aircraft, and simulate the user's motion trajectory; at the same time, it can simulate special motion trajectories such as circles and spirals. Special scene simulation function can simulate and generate special scenes with fixed pseudorange, fixed speed, and fixed acceleration;
Simulate the impact of various error sources on navigation signals during atmospheric propagation, and turn on and off the impact of error sources, including ionospheric delay, tropospheric delay and atmospheric parameters (temperature, humidity, air pressure, etc.), as well as the double atmospheric effect caused by the far-side satellite signal passing through the atmosphere twice;
Simulate various satellite navigation system failures, including signal lock/interruption, pseudorange or carrier and power anomalies, and users can set satellite integrity parameters, including: satellite health word, URA, regional user range accuracy index (RURAI), etc. For special users, support ionospheric storm and ionospheric scintillation anomaly simulation;
Through the human-computer interaction interface, you can configure the simulation time, static carrier trajectory, dynamic carrier trajectory, special carrier trajectory and other parameters, support external trajectory import, and specify external input trajectory files; you can set the pseudorange, power and other parameters of each channel, and you can set the ionospheric delay and tropospheric delay. It has the function of recording and outputting observation data and navigation messages, and has the script editing ability of pseudorange and power jump gradient;
Satellite antenna pattern and carrier antenna pattern modeling function can set antenna pattern and antenna attitude parameters, and can receive external input antenna pattern data;
The 4U AXI chassis, scalable hardware platform, open control protocols and communication protocols can meet the requirements of flexible architecture test systems.
Output Frequency
BDS: B1I,B3I,B1C,B2a,B2b, authorization signal
GPS: L1C/A,L1C,LIP,L2C,L2P,L5
GLONASS: L1OF,L2OF,L1OC,L3OC
Galileo: E1,E5a,E5b
QZSS: L1C/A,L1C,L2C,L5
IRNSS: L5
SBAS: WASS,EGNOS,GAGAN,MSAS,BDSBAS
RDSS: S1, S2C, authorization signal
Signal Accuracy
Pseudorange accuracy:
Design ≤ 0.0003mm
Actual measurement 0.01m
Pseudorange rate change accuracy:
<0.001m/s
Channels consistency:
0.1ns
Signal Scale
• Channel number: 12/16 per frequency (optional)
• Multipath number: 4/24 per frequency (optional)
Signal Quality
• Spurious (max.): -40dBc
• Harmonics (max.): -35dBc
• Frequency stability: ≤5×10-11/sec, ≤±5×10-10/day
Signal Dynamic Performance
• Relative velocity: 0 – 16,000m/s
• Relative acceleration: 0 – 900m/s2
• Relative jerk: 0 – 900m/s3
Phase Noise
• -75dBc/Hz @100Hz
• -80dBc/Hz @1kHz
• -85dBc/Hz @10kHz
• -90dBc/Hz @100kHz
Signal Control Level
• Resolution: superior to 0.2dB
• Absolute accuracy: superior to 0.2dB
• Power Range: -150dBm to -60dBm
External Interface
• 1PPS/10MHz pulse signal input port: one BNC port
• 1PPS/10MHz pulse signal output port: one BNC port
• RF output port: one Type-N port
Output Second Pluse Indicator
• Output level: 1LVTTL
• Rising edge stability: 0.1ns
• High level duration: >20ms
Closed Loop Delay (Optional)
Superior to 10ms
Inertial Navigation Simulation (Optional)
• Data output rate: 400Hz/s (max.)
• Output delay: ± 500ms
• Unit signal accuracy: 0.1n mile/h
• Adjustable step: 1μs
Power Supply
AC power: 220V±20V, 200W
Dimension
484.1 (W) × 175 (H) × 482.6 (D) mm
Main Machine
Optional functions
Item
Description
a
Real-time closed-loop simulation component
The real-time closed-loop simulation function supports the real-time trajectory data injection of the external trajectory simulator, and the real-time performance reaches the millisecond level;
b
Evaluation software component
Real-time evaluation, process scripting, batch automation testing, and automatic report generation functions; It can complete positioning accuracy, speed measurement accuracy, distance measurement accuracy, consistency test, bit error rate and other tests;
c
nertial navigation simulation component
According to the gyro and table parameters set by the user, gyro data simulation and table data simulation are performed, and the output can be synchronized with the satellite signal, the output delay and rate are adjustable, and external inertial navigation data import is supported;
d
Interference simulation component:
Multi-GNSS/Constellation/Frequency
e
Serial port timing simulation component
for the user machine timing function, the timing time can be offset and the timing times can be set.
