3.0-GNSS-12V Anti-Jamming Module

The model of this product is 3.0-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.

4.1. Interface Definition

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: 50Ω.

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, indicates that the statement is Global Positioning System Fix Data (GGA) GPS positioning information.
• Field 1: UTC time, hhmmss.sss, in hour-minute-second format.
• Field 2: Latitude ddmm.mmmm, degree division format (0 if leading digit is insufficient).
• Field 3: Latitude N (North) or S (South).
• Field 4: Longitude dddmm.mmmm, degree division format (0 if leading digit is insufficient).
• Field 5: Longitude E (East) or W (West).
• Field 6: GPS status, 0= not located, 1= non-differential positioning, 2= differential positioning, 3= invalid PPS, 6= Estimating.
• Field 7: Number of satellites in use (00-12) (0 if leading digit is insufficient).
• Field 8: HDOP horizontal accuracy factor (0.5-99.9).
• Field 9: Altitude (-9999.9-99999.9).
• Field 10: Height of the Earth’s ellipsoid relative to the geoid.
• Field 11: Differential time (number of seconds since the last received differential signal, if not differential positioning will be empty).
• Field 12: Differential station ID number 0000-1023 (if leading number is insufficient, it will be empty if not differential positioning).
• 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, indicates that the statement is GPS Satellites in View (GSV). Visible satellite information.
• Field 1: Total number of GSV statements (1-3).
• Field 2: This GSV statement is the number of GSV statements (1-3).
• Field 3: Total number of currently visible satellites (00-12) (0 for insufficient leading digits).
• Field 4: PRN code (pseudo-random noise code) (01-32) (0 for insufficient leading digits).
• Field 5: Satellite elevation (00-90) degree (0 for insufficient leading digits).
• Field 6: Satellite azimuth (000-359) degree (0 for insufficient leading digits).
• Field 7: Signal to Noise ratio (00-99) dBHz.
• Field 8: PRN code (pseudo-random noise code) (01-32) (0 if leading digits are insufficient).
• Field 9: Satellite elevation (00-90) degree (0 if leading digits are insufficient).
• Field 10: Satellite azimuth (000-359) degree (0 if leading digits are insufficient).
• Field 11: Signal to Noise ratio (00-99) dBHz.
• Field 12: PRN code (pseudo-random noise code) (01-32) (0 if leading digits are insufficient).
• Field 13: Satellite elevation (00-90) degree (0 if leading digits are insufficient).
• Field 14: Satellite azimuth (00-359) degree (0 if leading digits are insufficient).
• Field 15: Signal to Noise ratio (00-99) dbHz.
• Field 16: indicates the 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, indicating that the statement is Recommended Minimum Specific GPS/TRANSIT Data (RMC) recommended minimum specific location information.
• Field 1: UTC time, hhmmss.sss format.
• Field 2: Status, A= located, V= not located.
• Field 3: Latitude ddmm.mmmm, degree division format (0 if insufficient leading digits).
• Field 4: Latitude N (north latitude) or S (south latitude).
• Field 5: Longitude DDDmm.mmmm, degree division format (0 if insufficient leading digits).
• Field 6: Longitude E (East) or W (West).
• Field 7: Speed, Knots.
• Field 8: Azimuth, Degree.
• Field 9: UTC date, DDMMYY format.
• Field 10: Magnetic declination, (000-180) degrees (0 if insufficient leading digits).
• Field 11: Magnetic declination direction, E= East W= West.
• 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: Channel 1 Power.
• Field 2: Channel 2 Power.
• Field 3: Channel 3 Power.
• Field 4: Channel 4 Power.
• Field 5-9: Debugging information.
• Field 10: Spectrum identification.
• Field 11: Data frame tail.