3.0-GNSS-12V-Anti Jam Module

Description

Product Introduction

 

 

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.

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.

Features

• Anti-Jamming Ability:
  • Single-direction interference: better than 85 dBc
  • Three-direction interference: better than 75 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

Physical Dimensions and Mounting

 

 

130mm x 130mm x 38mm

Interface Description

Definition

The interface definition is shown in the following table:

Module Interface Definition

Serial Number	Code Name	Connector Type	Function Description
1	TX	SMP-JYD	GNSSRF Output, reserved
2	DATA	J30J-9ZKP	+12V Power input, Serial port

J30J-9ZKP Pin Definition

Pin Number	Definition	Remarks
1/2	VCC12V	Power supply
3/4	GND	Ground
5	UART_TXD	User serial port, TTL level
6	UART_RXD
7	UART_DGND
8	NC	Reserved
9	NC	Reserved

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.

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.

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:

Positioning	GGA
Satellite	GSV
Minimum positioning information	RMC
Velocity information	RMV
Jamming information	JAM

Identification of Four Major Satellite Navigation Systems

GP	GPS
GB	Beidou system
GL	GLONASS system
GA	GALILEO system
GN	GNSS hybrid

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.

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.

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.

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.

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.