ST100-12V-4VH Anti-Jamming

Description

Product Profile

This module is ST B 1L 1-100-12V, which is an anti-interference terminal with 100mm diameter. It mainly serves small and medium-sized UAVs, protecting user terminals from all kinds of unintentional interference and intentional attacks, greatly improving the security of PNT information.

Product Characteristics

• With interference power detection function, facilitating interference calibration, complete device joint tests, etc.
• Supports secondary development for spectrum monitoring, histogram analysis, and other processing.
• Supports 4-array anti-interference.
• Built-in navigation and positioning module, outputs positioning information according to the NEMA 0183 protocol.

Features

• Capacity of resisting disturbance:
  • Single-directional interference: ≥ 85 dBc
  • Multi-directional interference: ≥ 70 dBc
• Interference Type:
  • Band-limited Gaussian white interference, spread frequency matching spectrum interference
  • Pulse interference, sweep interference
  • Mixed interference
• Anti-interference airspace: orientation: 0° ~ 360°, angle of elevation: -30° ~ 90°
• Volume: (100 ± 0.5) mm x (100 ± 0.5) mm x (25 ± 0.5) mm
• Power consumption: 7.2W (room temperature, including positioning module)
• Weight: <300g

Physical Dimensions and Installation

100mm x 100mm x 25mm. The four corners of the whole machine are the mounting holes. Fixation by the four M3 screws to the platform vector is indicated.

During installation, we need to ensure the radome faces up. If placed in the platform carrier, permeable wave material should be used above the product.

Interface Specification

Electrical Interface Description

The interface definitions are shown in the following table:

Order No.	Code Name	Connector Model	Functional Description
1	data	J30J-9ZKP	+12V power supply input, serial port

The data interface pin is defined as shown in the table:

Pipe Foot No.	Definition	Remarks
1/2	VCC 12V	Source
3/4	GND	Ground
5	UART_TXD 1	Upgrade the serial port, 232 level
6	UART_RXD 1	Upgrade the serial port, 232 level
7	UART_DGND	Ground
8	UART_TXD 2	Positioning module serial port, TTL level
9	UART_RXD 2	Positioning module serial port, TTL level

RF Signal Characteristics:

• Output signal frequency: B1\L1
• Power in the output signal band: -65 ± 1 dBm
• Output impedance: 50 Ohms

Physical Interface Description

Order No.	Code Name	Connector Model
1	radio frequency interface	SMA-JYD
2	data interface (apolegamy)	3-pin DuPont line, red/white/black, corresponds to the positioning serial port UART_TXD 2, UART_RXD 2, UART_DGND respectively | SH 1.0 plug of 6pin, consistent with Pixhawk open-source flight control interface | Other interface forms require user transfer.

At delivery, the data interface can choose one of DuPont line or SH 1.0 plug. Other interface forms require the user to transfer by himself.

Connection Relationship Description

The electrical signal connection of the product and the platform carrier is connected by low-frequency data mode, replacing the conventional positioning terminal.

In the RF signal access mode, this product replaces the conventional active antenna.

Notes for Docking with Flight Control

This product has already been connected with the open-source flight control Pixhawk and the self-research flight control of IBC, and the interfaces of the two flight controls are different.

Open-source flight control Pixhawk

The flight control terminal needs to be configured in NEMA working mode. In the Mission Planner software interface, select Configuration / Debug, select the GPS option in All Parameters, and set the GPS_TYPE label value to 5, which is the NEMA protocol. Finally, click on Write Parameters to save the changes. After factory configuration, the information required by Pixhawk flight control, including GGA, RMC, VTG, RMV, etc., will be available. The NEMA protocol statement for output can also be configured by the user.

Beijing creates horizontal flight control

The hex system protocol was used for data transfer. The anti-interference terminal firmware automatically outputs the data required for transverse flight control after factory configuration.

Example of Positioning Module Protocol Configuration

PIXHAWK Open-source Flight Control

Step 1: Configure the positioning module. Through the TTL to USB conversion line connected to the personal computer, use the serial port debugging assistant software to send configuration instructions, and save. You must check “return line” when sending instructions.

Instruct	Meaning
unlogall	Stop all protocol output
log gngga ontime 0.2	0.2s, interval output GGA, interval minimum can be configured as 0.1
log gnrmc ontime 0.2	0.2s, with the interval output RMC
log g p vtg ontime 0.2	0.2s, with the interval output VTG
log pgrmv ontime 0.2	0.2s, with the interval output RMV
log gp gsv ontime 0.2	0.2s, interval output GSV
SAVECONFIG	Maintain the configuration and transmit the data following the above instructions

The above instructions only need to be configured once, and the subsequent boot-up automatically sends the data according to the above instructions.

Instruct	Meaning
unlogall	Stop all the output
log gngga ontime 0.2	0.2s interval output GGA
log gnrmc ontime 0.2	0.2s interval output RMC
log gpvtg ontime 0.2	0.2s interval output VTG
log pgrmv ontime 0.2	0.2s interval output RMV
log gpgsv ontime 0.2	0.2s interval output GSV
SAVECONFIG	Save the configuration to the flash

The second step is to connect the 3-foot DuPont line: white line TX to the RX of flight control, red line RX to the TX of flight control, the black GND is connected to the GND of flight control.

IBC Flight Control

Step 1: Configure the positioning module. Through the TTL to USB conversion line connected to the PC, use the serial interface debugging assistant to send configuration instructions, and save.

Instruct	Meaning
unlogall	Stop all protocol output
LOG COM1 BESTPOSB ONTIME 0.2	Output position information at the 0.2-s interval
LOG COM1 BEST VEL B ONTIME 0.2	Output speed information at the 0.2-s interval
LOG COM1 PSRDOPB ONTIME 0.2	The 0.2-s interval of the output accuracy information
SAVECONFIG	Maintain the configuration and transmit the data following the above instructions

The second step is to connect the 3-foot DuPont line: white line TX to the RX of flight control, red line RX to the TX of flight control, and black GND to the GND of flight control.

Use Summary

In general, this product is relatively simple to use. The following main steps:

1. Fixed. Install fixation with M3 screws.
2. Supply electricity. Use XT30 power supply, supply voltage 12V, not more than 15V.
3. Position the data connections. Connect the DuPont line TTL serial port of this product to the flight control GNSS serial port.

Disclaimer

This product is designed to improve the security of satellite navigation. Please comply with the relevant laws and regulations during the use. The use of this product for any illegal activities is not related to this product.