Table of Contents

The Rf message analyzes the UAV manual detection and positioning system

Disclaimer and Warnings

Thank you for purchasing the product. The content mentioned in this article concerns your security, legitimate rights and responsibilities. Before using this product, read this article carefully to ensure that the product has been set up correctly. Failure to follow and failure to follow the instructions and warnings provided in this article may cause harm to you and those around you or damage this product or other surrounding items. Once using this product, you are deemed to have carefully read the disclaimer and warnings, understood, recognized, and accepted the entire terms and contents of this statement. You undertake full responsibility for the use of the product and the possible consequences. You undertake to use the product only for proper purposes and agree to this clause and any relevant regulations, policies and guidelines developed by ™. Low-altitude Guards ™ is not responsible for damage, injury and any legal liability arising from the direct or indirect use of the product. The user shall follow all safety guidelines including but not limited to. Even with the above provisions, the rights and interests of consumers are still protected by local laws and regulations and are not affected by this disclaimer.

Product overview

Introduction and basic functions

The UAV manual detection and positioning system includes mobile hardware equipment and locally installed web application system, which can locate multiple DJI drones and their controllers simultaneously within a certain range. The system continuously monitors the surrounding RF environment and shows the geographical location of the drone and remote controls.

The principle of the system is to receive the DJI drone beacon signal and decode the information in the radio message. The extracted information includes but is not limited to the uav model (SN code), remote control geographic location, geographical location of the return point, geographic location, current location of the UAV, flight speed, flight altitude, etc. The system contains an API for forwarding the detection data to other systems to facilitate the connection between individual systems.

Product characteristics

Flying hand positioningThe single machine can locate and display the pilot position in real time
Uav positioningCan locate the flight position of the UAV
Unique identityThe unique serial number of the UAV can be identified
Multi-unit networkingIt can intervene in the back-end control platform online, and the multi-machine combination covers a large area
Mobility responseSecond level deployment, boot on
Mobile portablePortable case portable design, small size, carry

operational principle

operational principle


Safety Instruction

General precautions

(1) Line investigation

Before use, check whether the power supply and antenna are properly connected. We should check and handle the cable of the flying positioning equipment to check whether the cable connection of the flying positioning equipment is firm to prevent the plug from falling off and the connection is not strict. After the confirmation, it can be powered on.

(2) Beware of short circuit

To locate the plug of the equipment, wire battery storage, appropriate to avoid moisture or contact with water, to avoid the occurrence of metal parts exposed, once there are problems, to be dealt with in time, to prevent leakage, short circuit.

However, it should be noted that it is not allowed to handle the flying hand positioning equipment without authorization, but to ask professional repair personnel to deal with it. If the wrong lead will be connected, the flying hand positioning equipment will cause irreversible damage, and even lead to its direct scrap.

(3) The storage system of the flying hand positioning equipment should be checked regularly

We will regularly check the flying hand positioning equipment information storage space is sufficient, memory storage equipment whether damage phenomenon, battery is sufficient to ensure that the storage system can work well, keep good working condition storage equipment memory space should be timely processing to prevent because of insufficient storage space and affect its work.

(4) Do not change the equipment parameters at will

The device cannot type information at will, because after the parameters change, the program will also change, and the data received by the receiver will also change, which will affect the accuracy and authenticity of the data obtained. If you must modify the parameters, please ask the relevant professionals to type, to avoid non-professionals to press the key operation, so as to avoid the wrong modification of the parameters.

(5) Note the antenna setting of the fly-hand positioning equipment

Ensure that the antenna installation is stable and not falling off and loose. The external antenna should be tightly connected through the cable and the antenna device of the flying hand positioning equipment can not be loose. Otherwise, the accuracy and stability of the receiver receiving the signal will be affected. In addition, the thunderstorm season should do a good job of lightning protection work.

(6) Stay away from the strong magnetic field working environment

(7) Notes in transportation

If the receiver needs long distance transportation due to special circumstances, it should do a good job of packing and take light light to avoid inversion and overloading. In the process of transportation, there should be professional shock absorption box and shock absorption equipment to avoid the external damage caused by the flying hand positioning equipment in the vehicle driving.

Safety profile

Please read the following safety precautions carefully to avoid damage to this product or other products connected to this product.

Do not open the instrument and open the cover without authorization:

Without the permission of the low-altitude guards, users can not open the equipment without authorization, and it is strictly prohibited to open the product when the equipment is running;

No use with counter equipment:

When used together with the counter equipment, it will interfere with the signal received by the equipment, affect the measurement distance and GPS positioning, or cause the data to be inaccessible;

When a product fault is suspected, the operation is strictly prohibited:

If you suspect this product fault, please contact the low-altitude guard for testing. Any maintenance, adjustment, or parts more

Change must be by, the low-altitude guard execution;

Service environment

When the equipment is working, try to choose the commanding point within the range.

Electrical access

Built-in 16,800 mah lithium battery, can access 220V mains.

Technical Parameter

Product Parameters

Detect distance0-2KM (range depending on equipment installation antenna)
Detect the timeNormally 30 seconds (detection time may change as the drone distance increases)
Complete machine power consumption50W
temperature resistance- 30℃~ 50℃
The detect detect can be detectedDJI Phantom 3, DJI Mavic 2, DJI Mavic 3, DJI FPV, DJI 2S, DJI M300, et al

Antenna parameters

Antenna frequency band: 2.4G
Antenna total length: 60cm

Unit beam radiation performance:
Cell beam downdip: 01°

test itemIndex requirementsTest Frequency (MHZ)Port number
Horizontal flap width (3dB)65±5 °5700.0114.78
Level in front of the comparison>25dB5700.03.83
Vertical face lobe width (3dB)>15 °5700.05.97

Antenna unit beam orientation diagram picture:





Other components parameters (including supply voltage battery capacity, etc.)

  1. Receiver parameters
    Parameter categorynumeric valueunitParameter categorynumeric valueunit
    Input / outputSingle-channel RF activity parameters
    DC voltage input5.0VSSSR signal / mirror inhibition-35/50dBs
    Convert module parameters3.5GHz1.0degRMS
    ADC sampling rate (maximum)61.44MS/s6GHz1.5degRMS
    ADC resolution ratio12.0bitsoutput power>10dBm
    ADC SFDR78.0dBcEnter the third-order interception point-20.0dBm
    DAC sampling rate61.44MS/snoise factor<8dB
    ADC, resolution ratio12.0bitsPhysical properties
    Max. rate with host (16b)61.44MS/s
    This vibration accuracy±2.0ppmsize9*6*1.5cm
    The TCXO precision is not locked±7.5ppnweight150.0g
  2. Adapter parameters
    technical parameter:
    Input voltage: AC (AC) 100-240V~50 / 60Hz
    Output voltage: DC (DC) 12V
    Output current: DC (DC) 10A
    Output interface: straight head 505*2.5mm
  3. Battery parameters
    Model number: 12V 16800mAh
    Rated capacity: 168,000 mAh
    Cell string / parallel number: 3S6P
    Connector: DC 5.5-2.5 master header XH 2.54 male header
    Dimensions: 115 * 66 * 55mm
    Weight: about 920g
    Maximum continuous discharge current: 25A
    Maximum instantaneous current: 50A
    Battery parameters

  4. Display parameter
    Adopt a new 17.3-inch LED screen (VGA line), resolution: 1920 * 1080


List of items

Host x1 WIFI network card x1 power cord x1 waterproof case x1 antenna x2

Name of mechanical installation and parts

Name of mechanical installation and parts<br />
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<tr class= 1. Antenna interfaceAccess to the antenna through the antenna RF cable.
2. Power interfaceIt can be used for 220V AC power supply and equipment for lithium battery charging.
3. The USB interfaceCan be used to connect the wireless network card / display screen
4. Ethernet interfaceCan be used to connect the external net
5. Equipment indicator lightUsed to indicate the respective module status of the equipment.




Equipment startup and operating system login

Device boot-system login-run front-end webpage-user log-in-drone list-coordinate record-map display

Web page control

  1. Login interface (login account password interface)Login interface (login account password interface)
  2. User management(administrator interface)
    User management(administrator interface)
  3. Historical Data query
    Historical Data query
  4. Map management
    Map management


Equipment inspection and maintenance

 Portable UAV flying hand positioning equipment (hereinafter referred to as equipment) is a high precision, all-weather, low energy consumption precision equipment. The correct use and maintenance of the equipment can not only help our life and work, but also help to maintain the accuracy of the equipment, reduce the life loss, so that the equipment can better serve and longer for us.

Before putting the new hand positioning equipment is used, a series of tests are required to ensure that the receiver works in good condition and operates with high precision. Pre-use inspection is an important link, a good running state can ensure the accuracy of the data obtained by the equipment, and prolong the service life of the equipment.

The inspection of the pilot hand positioning equipment can be started from the following aspects:

Pre-use inspection

Check the appearance

First of all, after the purchase of the new flying hand positioning equipment, the appearance should be checked. According to the packing instructions, the model and number of the equipment should be checked, and the basic accessories of the equipment should be checked. Ensure that all parts meet the specifications to avoid falling off and loosening phenomenon. First keep ventilation still for a period of time, and then conduct on test to check the working state of the display signal lamp, antenna and so on of the equipment to ensure that they can operate normally.

Test the signal stability

After determining that the startup state of the equipment is normal, we can check the performance of the flying hand positioning equipment. To identify the practicability of the manual positioning equipment, it is necessary to check the ability of the manual positioning equipment to receive radio signals and the stability of receiving signals. We have to conduct a period of trial, record the receiving data, and then conduct data comparison to ensure the accuracy of the internal parameters of the pilot positioning equipment.

Daily inspection

For the operation of manual positioning equipment, in addition to careful inspection and correct use, the common maintenance measures of manual positioning equipment are as follows:

Daily cleaning

The cleaning of the flying positioning equipment should be carried out after the end of every day. Gently brush off the dust and dirt on the equipment with a soft brush to ensure that the flying positioning equipment is clean and packed.

Stay away from wet and bad weather working conditions

Flying hand positioning equipment should be used away from the wet environment to avoid contact with water a day wet to put the equipment in a ventilated place, natural dry. In addition, the flying hand positioning equipment in the environment of sudden change in temperature operation, need to give it a process of adaptation, too bad environment is not suitable for the work of the receiver.

Professional maintenance

In the process of the use of the flying hand positioning equipment, the operator should not start the machine without authorization and can not repair by themselves because non-professional repair is likely to cause secondary injury to the equipment, which can not only not solve the problem but also may aggravate the seriousness of the problem. The faulty flying hand positioning equipment should be sent to the professional repair personnel for repair in time.

Maintain a good storage environment

The working environment of the flying hand positioning equipment should be kept dry and clean, and should not be placed in a high temperature environment. The long-term unused flying hand positioning equipment should be put into the box for safekeeping, moisture-proof, pressure-proof and anti-shockproof. The appropriate amount of desiccant should be put in the box to avoid the data loss or error caused by damp of the equipment. The equipment shall be maintained regularly and powered on to ensure that the internal components of the equipment are kept in good condition.

Irregular inspection

Low-altitude bodyguard portable unmanned aerial vehicles flying positioning equipment maintenance, repair, inspection work should have an accurate record, such record can not only standardize the operator procedures, can also fly to judge the use of positioning equipment, after the equipment condition can provide reference to repair personnel, convenient repair problems.

Typical troubleshooting and upgrading

Common AC faults

Structural problems

The equipment shakes with abnormal sound
Determine the abnormal sound parts of the equipment and note the details of the phenomenon in the return information bar of the equipment repair sheet.
Check the equipment shell for collision marks and for obvious deformation parts.

Repair the equipment, pay attention to the packaging of the returned equipment using standard packaging, to avoid secondary damage to the equipment.

Ethernet port network cable insertion is not tight

By replacing the crystal head, cross-verify whether it is the non-standard crystal head. If it is found to be the non-standard crystal head, it is recommended that the customer replace the standard crystal head or use the finished network wire for verification.

If the problem of falling off can not be solved by replacing the crystal head, this batch of crystal head should be tested on other equipment to observe whether it is easy to fall off, so as to judge the connector of the equipment.

If it is confirmed that the problem cannot be solved by replacing the crystal head, and it is related to the connector of the equipment, contact the technical support engineer to assist in handling.

Power supply module failure

The common positioning methods for power supply module faults are as follows:

Measure the input voltage. When possible, use the multimeter to measure the input voltage, and judge whether the input voltage is abnormal according to the working voltage range of the power supply module.

Plug and unplug the power module, replug the power module and the power cord to eliminate bad contact factors.

Cross-verify the power supply module, put the faulty power supply into other normal equipment for observation, or take the normal power supply from other equipment to cross-verify and identify the fault. If the fault follows the power module, repair the power module.

If the power abnormality occurs in the equipment after cross-verification, contact the technical support engineer to assist.


Usage Scenario

Prison of justice, important places, military bases, airports, nuclear power departments, government organs.

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Party,government and military
political core area chief resident
Nuclear power plants, oil refineries, oil storage tanks and other inflammable and explosive danger areas
Guard points and perimeter for foreign affairs activities and other major security tasks


Satellite ground station (including measurement and control, ranging, receiving and navigation station)
Prison, detention center

The venue for major events


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