3.0pro-GNSS-12V Professional 4-Array Anti-Jamming Module

1. Product Introduction

The model of this product is 3.0pro-GNSS-12V. It serves reliable navigation fields such as drones and unmanned vehicles, protects user terminals from all kinds of unintentional interference and malicious attacks, and greatly improves PNT information security.

1.1. Functional Characteristics

• Has interference power detection function, convenient for interference calibration, combined test of the whole machine.
• Supports secondary development, further spectrum monitoring, histogram analysis, and other processing.
• Supports 4-array full frequency point anti-jamming.
• Built-in full-frequency navigation and positioning module outputs positioning information according to NEMA0183 protocol.

2. Features

• Anti-Jamming Ability:
  • Single-direction interference: better than 95 dBc
  • Three-direction interference: better than 85 dBc
• Type of Interference:
  • Band-limited Gaussian white interference, spread spectrum matching spectrum interference
  • Pulse interference, sweep interference
  • Mixed interference
• Anti-interference airspace: angle of orientation: 0° ~ 360°, angle of pitch: -30° ~ 90°
• Dimensions: (130 ± 0.5) mm x (130 ± 0.5) mm x (38 ± 0.5) mm
• Power consumption: 10W (at room temperature, including positioning module)
• Weight: < 400g

3. Physical Dimensions and Mounting

130mm x 130mm x 38mm

Figure 3-1. Physical Dimensions

4. Interface Description

4.1. Interface Definition

The interface definition is shown in the following table:

Table 4-1. Module Interface Definition

Table 4-2. J30J-9ZKP Pin Definition

4.2. RF Output Specification

• Output signal frequency: 1.2~1.6G covering all navigation frequency points, consistent with the input frequency;
• Output signal in-band power: -65 ± 1dBm;
• Output impedance: 50 Ω.

5. Typical Applications

• Electric power, communications, finance, and other fields requiring timing security;
• Unmanned aerial vehicles, unmanned vehicles, unmanned ships, and other navigation security;
• Motorcade defense navigation security;
• High-end logistics navigation security.

6. Data Protocol Specification

Based on the NEMA0183 protocol format, the output of interference monitoring information is added. At present, the output protocols mainly fall into the following categories:

Table 6-1. Identification of Four Major Satellite Navigation Systems

7. Data Protocol Examples

7.1. GPGGA Example

GPGGA,092204.999,4250.5589,5,14718.5084,E,1,04,24.4,19.7,M,0000*1F

• Field 0: GPGGA - Message ID, Global Positioning System Fix Data.
• Field 1: UTC time (hhmmss.sss).
• Field 2: Latitude (ddmm.mmmm).
• Field 3: Latitude direction (N/S).
• Field 4: Longitude (dddmm.mmmm).
• Field 5: Longitude direction (E/W).
• Field 6: GPS status (0=not located, 1=non-differential, 2=differential, 6=Estimating).
• Field 7: Number of satellites in use (00-12).
• Field 8: HDOP horizontal accuracy factor (0.5-99.9).
• Field 9: Altitude.
• Field 10: Height of the Earth's ellipsoid relative to the geoid.
• Field 11: Differential time.
• Field 12: Differential station ID number (0000-1023).
• Field 13: Check value.

7.2. GPGSV Example

GPGSV,3,1,10,20,78,331,45,01,59,235,47,22,41,069,13,32,252,45*70

• Field 0: GPGSV - Message ID, GPS Satellites in View.
• Field 1: Total number of GSV statements (1-3).
• Field 2: This GSV statement number (1-3).
• Field 3: Total number of currently visible satellites (00-12).
• Field 4: PRN code (01-32).
• Field 5: Satellite elevation in degrees (00-90).
• Field 6: Satellite azimuth in degrees (000-359).
• Field 7: Signal to Noise ratio (SNR) in dBHz (00-99).
• Fields 8-15: Repeat fields 4-7 for other satellites.
• Field 16: Parity value.

7.3. GPRMC Example

GPRMC,024813.640,A,3158.4608,N,11848.3737,E,10.05,324.27,150706,A*50

• Field 0: GPRMC - Message ID, Recommended Minimum Specific GPS/TRANSIT Data.
• Field 1: UTC time (hhmmss.sss).
• Field 2: Status (A=located, V=not located).
• Field 3-6: Latitude, N/S, Longitude, E/W.
• Field 7: Speed in Knots.
• Field 8: Azimuth in Degrees.
• Field 9: UTC date (DDMMYY).
• Field 10-11: Magnetic declination and direction.
• Field 12: Check value.

7.4. PGRMV Example

PGRMV,0.0,0.1,0.1,*hh

• Field 1: Eastbound velocity (meters/second).
• Field 2: North velocity (meters/second).
• Field 3: Sky velocity (meters/second).

7.5. GNJAM Example

GNJAM,23.1,23.1,23.1,23.1,32,32,32,32,0,*68

• Field 1-4: Channel 1-4 Power.
• Field 5-9: Debugging information.
• Field 10: Spectrum identification.
• Field 11: Data frame tail.