Basic Info.
Frequency Range
1575.42MHz±1.023MHz
Type
Function Signal Generator
Product Description
Multi-beam navigation signal simulator (GNS8460)
Keywords: Multi-beam, anti-jamming, equipment development
The GNS8460 multi-beam simulator is designed for multi-element anti-jamming antenna testing, multi-channel anti-jamming receiver testing, and orientation and attitude measurement. Application requirements, the launch of the simulator for high-precision satellite navigation signal simulation for the global satellite navigation system. The GNS8460 multi-beam simulator has 96 channels per frequency point and can be used to generate 8-beam satellite signals (corresponding to 8 antenna array elements). Each satellite has 24 satellite signals. The accuracy and consistency of RF carrier phase control between beams is better than 1 degree. Support BDS / GPS / GLONASS / Galileo and other constellation signal combination output at any frequency, provide high stability standard 1PPS pulse signal and 10MHz clock signal output, can meet the design and development, production test and equipment of various multi-antenna terminal equipment Test and other application requirements
Features
1) BD3 signal simulation Support Beidou-3 public frequency point and authorized frequency point (B1C, B2a, B1A and other frequency points) simulation output, support Beidou global satellite simulation.
2) Constellation simulation Can complete satellite orbit simulation, satellite clock difference simulation, delay differential TGD simulation of BDS / GPS / GLONASS / Galileo and other constellations. It can simulate and generate satellite orbits, observation data and navigation messages of BDS constellation (36), GPS constellation (32), GLONASS constellation (24), Galileo constellation (24) and its mixed constellation, and can simulate the carrier movement process Changes in satellite signal strength, etc.
3) Trajectory simulation It has the ability to generate static and dynamic trajectories. It can simulate the motion characteristics of static and dynamic carriers and generate user trajectories. At the same time, it can simulate special motion trajectories such as circles and spirals. With special scene simulation function, it can simulate and generate special scenes with fixed pseudorange, fixed speed and fixed acceleration.
4) Environment simulation It can simulate the influence of various error sources on navigation signals in the propagation of navigation signals in the atmosphere, and can turn on and off the influence of error sources, including ionospheric delay, tropospheric delay and atmospheric parameters.
5) Abnormal simulation 22
It can simulate various satellite navigation system failures, including signal loss/interruption, pseudorange or carrier and power abnormality. Users can set satellite integrity parameters including: satellite health word, URA, regional user distance accuracy index (RURAI), etc. For special users, ionospheric storm and ionospheric scintillation abnormal simulation are supported.
6) Simulation control Parameters such as simulation time, static carrier trajectory, dynamic carrier trajectory, and special carrier trajectory can be configured through the human-computer interaction interface, and external input trajectory files can be specified. Able to set parameters such as pseudorange and power of each channel, and can set ionospheric delay, tropospheric delay and atmospheric parameters (temperature, humidity, air pressure, etc.). It has the functions of observation data and navigation message recording and output, and has the script editing ability of pseudo-range and power jump gradient.
7) Antenna modeling With the antenna array and antenna pattern modeling functions, you can set the antenna array, antenna pattern, and antenna attitude parameters, and can receive externally input antenna array parameters and antenna pattern data.
8) Real-time closed-loop With real-time closed-loop simulation function, it can perform real-time constellation simulation and real-time signal generation, support real-time trajectory data injection of external trajectory simulator, and the real-time performance is better than 10ms.
9) Inertial navigation simulation According to the gyro and meter addition parameters set by the user, the gyro data simulation and meter addition data simulation can be performed, and can be synchronized with the satellite signal output, the output delay and rate are adjustable, and support external inertial navigation data import.
10) Interference simulation It can complete the simulation of forwarding interference, deceptive interference, multi-path interference and custom interference, and can generate custom interference signals such as continuous wave, frequency sweep signal and frequency modulation signal.
11) Test and evaluation With real-time evaluation, process scripting, batch automated testing and automatic report generation. Tests such as positioning accuracy, speed measurement accuracy, ranging accuracy, consistency test, and bit error rate can be completed.
12) Other features Can be synchronously interconnected with multiple systems to build a large and complex simulation test platform. Adopt modular design, with good openness, scalability and compatibility.
Parameter index
(1) Output frequency Multiple frequency points can be selected at will.
(2) Interference signal (optional) Forwarding interference; Deception interference; Multi-path interference; Custom interference: single frequency interference, frequency sweep interference, noise frequency modulation, pseudo code noise, etc. Interfering signal power: -120dBm ~ -30dBm
(3) Signal scale Number of channels: 96 channels per frequency point Number of multipaths: 1 to 4 channels per beam (multiplexing 12 channels) Number of antenna elements: 8 supported
(4) Signal accuracy Pseudorange phase control accuracy: better than 0.05m Pseudorange change rate accuracy: better than 0.005m/s Inter-channel consistency: 0.3ns Inter-beam carrier phase consistency: better than 1 degree
(5) Signal quality Phase noise: -75dBc/Hz 100 Hz; -80dBc/Hz 1k Hz; -85dBc/Hz 10k Hz; -90dBc/Hz 100k Hz Harmonic power (MAX): -40dBc Clutter power (MAX): -50dBc
(6) Signal power Power range: -150dBm~-60dBm Power resolution: better than 0.2dB Power accuracy: better than 0.7dB
(7) Dynamic range Speed: 0~120000m/ s; acceleration: 0~8000m/s2; acceleration: 0~80000m/s3;
(8) closed loop delay (optional) real-time performance is better than 10ms
(9) inertial navigation simulation (optional) highest data Output rate: 400Hz/s Inertial measurement unit signal accuracy: 0.1n mile/h Output delay: -500ms~+500ms, adjustable step: 1us
(10) External interface RF signal: 1~8 (corresponding to 1 ~8 array elements) Reference 1PPS pulse signal (BNC type head): 1 input and output each Reference 10MHz clock signal (BNC type head): 1 input and output each RF output port (TNC type head): 1~8
(11) clock stability second stability: ≤ 5×10-11 day stability: ≤ ±5×10-10
(12) External reference input 1PPS pulse signal: 1 channel 10MHz clock signal: 1
(13) Standard reference output 1PPS pulse signal: 1 channel 10MHz clock signal: 1 channel Multi-channel output is required, time-frequency chassis is optional.
(14) Output second pulse index Output level: LVTTL Rising edge stability: 0.1ns High level duration: greater than 20ms
(15) Reliability index MTBF:> 2000 hours MTTR: <2 hours MLDT :< 24 hours
(16) Working environment Working temperature: -10ºC- +55ºC Humidity: 10%~75% (22C), ≥90% (45ºC)
(17) Storage and transportation Impact: ≤9g/s Vibration: ≤0.1g/(10Hz~100Hz) Humidity: ≤98% Storage temperature: -45C~+75C
25
(18) Power supply AC voltage 200v-250v, frequency (50±10) Hz, DC ripple ≤3% Automatic protection when power supply is abnormal
