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AoA Locator For Indoor RTLS Personnel Tracking and Asset Positioning

Table of Contents

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DSGW-200 is an Indoor AoA Locator for BLE AoA Positioning, developed by Dusun IoT. It can reach a positioning accuracy of 0.3-1 meters in the 2D plane. At the same time, this AoA Locator has the characteristics of low power consumption, low delay, low radiation, and strong anti-interference. A signal locator can achieve 2D positioning.

DSGW-200 AoA Locator is suitable for personnel tracking and real-time positioning of assets in smart healthcare, smart factories, smart offices, and smart education. 

DSGW-200 AoA Locator also has an IoT gateway function, it supports the Zigbee, Z-wave, and BLE wireless protocol. Besides, AoA locator is also a Blueooth gateway using BLE Angle of Arrival technology.

See How AoA locator works in ture scenes

DSGW-200 AoA Locator Features

  • Support 5V USB type-c power supply
  • Support IEEE802.3-2012 Type 1, the IEEE802.3-2012 Type 1 requires a power supply device (PSE) to provide 44 to 57V, and the power of the powered device (PD) must not exceed 12.95 W and the current does not exceed 350 mA
  • Support IEEE802.11ac, IEEE802.11a,IEEE802.11n,IEEE802.11g,IEEE 802.11b Protocol
  • Support 4G LTE cat M1
  • Support Bluetooth 5.2
  • Support zigbee3.0
  • Support Z-wave
  • Support LoRa
  • One WAN/LAN variable network port
  • Support USB2.0
  • Backup Li battery

DSGW-200 AoA Locator Hardware Block Diagram

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DSGW-200 AoA Locator Mechanical Requirement

DSGW-200 AoA Locator Drawings

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DSGW-200 AoA Locator Sizes

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DSGW-200 AoA Locator Specifications

DSGW-200 AoA Locator Technical Specification

Power SupplyUSB type-C 5V/2A
Reset buttonThe reset button is hole button, After pressing the reset button for more than 5 seconds, the Locator will be restored to the factory settings.
SwitchOn/Off power
Network InterfaceThe network interface supports CAT-5/CAT-5E to transmit data and POE Power Supply (voltage range is 44~ 57V). It is WAN/LAN variable.
PCleFor LoRa Module
SIM cardMicro SIM card
Indicator LEDs1).Power &battery LED
3).Wi-Fi LED
4).LTE indicator
Antenna array direction
4*4 Antenna Array
Li battery6000mAH (It can last 4 hours without DC power)
Installation methodCeiling
RTCReal Time Clock operated from on board battery
Operating Temperature-10℃~60℃
Storage Temperature-40℃~85℃
Operating humidity10%~90%
CoolingHeat dissipation silicone/aluminum
IP ratingIP53
positioning accuracy0.3-1 meter
Detect range360° array antenna, Angle of Arrival measurement in the 2.4GHz band

DSGW-200 AoA Locator Protocol Performance Requirement

Wi-Fi Performance●IEEE wireless LAN standard:
IEEE802.11ac; IEEE802.11a; IEEE802.11n; IEEE802.11g; IEEE 802.11b
●Data Rate:
IEEE 802.11b Standard Mode:1,2,5.5,11 Mbps
IEEE 802.11g Standard Mode:6,9,12,18,24,
36,48,54 Mbps
IEEE 802.11n: MCS0~MCS7 @ HT20/ 2.4GHz band
MCS0~MCS7 @ HT40/ 2.4GHz band
MCS0~MCS9 @ HT40/ 5GHz band
IEEE 802.11ac: MCS0~MCS9 @ VHT80/ 5GHz band
VHT80 MCS9 : [email protected]% PER(MCS9) /5GHz band
HT40 MCS9 : [email protected]% PER(MCS9) /5GHz band
HT40 MCS7 : [email protected]% PER(MCS7) /2.4GHz band
HT20 MCS7 : [email protected]% PER(MCS7) /2.4GHz band
●Transmit Power:
IEEE 802.11ac: 13dBm @HT80 MCS9 /5GHz band
IEEE 802.11ac: 16dBm @HT80 MCS0 /5GHz band
IEEE 802.11n: 14dBm @HT20/40 MCS7 /5GHz band
IEEE 802.11n: 16dBm @HT20/40 MCS0 /5GHz band
IEEE 802.11n: 16dBm @HT20/40 MCS7 /2.4GHz band
IEEE 802.11g: 16dBm @54MHz
IEEE 802.11b: 18dBm @11MHz
●Wireless Security: WPA/WPA2, WEP, TKIP, and AES
●Working mode : Bridge、Gateway、AP Client
●Range: 50 meters minimum, open field
●Transmit Power:17dBm
●Highest Transmission Rate: 300Mbps
●Frequency offset: +/- 50KHZ
●Frequency Range (MHz): 2412.0~2483.5
●Low Frequency (MHz):2400
●High Frequency (MHz):2483.5
●E.i.r.p (Equivalent Isotopically Radiated power) (mW)<100mW
●Bandwidth (MHz):20MHz / 40MHz
Bluetooth-Performance●TX Power: 19.5dBm
●Range: 150 meters minimum, open filed
●Receiving Sensibility: [email protected]%BER
●Frequency offset: +/-20KHZ
●Frequency Range (MHz):2401.0 ~ 2483.5
●Low Frequency (MHz):2400
●High Frequency (MHz):2483.5
●E.i.r.p (Equivalent Isotopically Radiated power) (mW)<10mW
●Bandwidth (MHz):2MHz
●Modulation: GFSK
Zigbee Performance●TX Power: 17.5dBm
●Range: 100 meters minimum, open filed
●Receiving Sensibility:-94dBm
●Frequency offset: +/-20KHZ
●Frequency Range (MHz):2401.0 ~ 2483.5
●Low Frequency (MHz):2400
●High Frequency (MHz):2483.5
●E.i.r.p (Equivalent Isotopically Radiated power) (mW)<100mW
●Bandwidth (MHz):5MHz
●Modulation: OQPSK
Z-Wave Performance●TX power up to13dBm (20mW)
●RX sensitivity: @100kbps-97.5dBm
●Range: 100 meters minimum, open filed
●Default Frequency: 916MHz( Different country with different
LoRaWAN Performance●Frequency band support RU864, IN865, EU868, US915, AU915, KR920, AS923
●TX power up to 27 dBm, RX sensitivity down to [email protected] 12, BW125KHz
LTE Cat M1●Operation Frequency Band: 850/ 900/ 1800/ 1900 MHZ
●Global:LTE:FDD: B1/ B2/ B3/ B4/ B5/ B8/
B12/ B13/ B18/ B19/ B20/ B26/ B28
●North America: LTE TDD: B2/ B4/ B12/ B13
●LTE TDD:B39(for cat.M1 only)
WAN/LAN10/100M bps

DSGW-200 AoA Locator Quality and Testing Information

Information DescriptionStandard(Yes) custom(No)
ESD TestingYes
RF Antenna AnalysisYes
Environmental TestingYes
Reliability TestingYes
CertificationFCC, CE, Bluetooth(BQB), PTCRB, RoHs

DSGW-200 AoA Locator Working Principle

DSGW-200 AoA Locator has an array antenna, the beacon sends Bluetooth data, and DSGW-200 AoA Locator can receive or send Bluetooth signals when switching between different antennas.

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Antenna array design
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Bluetooth Angle of Arrival Operation of DSGW-200 AoA Locator

Measure and detect the phase difference of the Bluetooth signal between different receiving antennas, and then calculate the angle of arrival of the signal based on this information and the known distance between the different antennas.

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Derive AoA from the Phase Difference of Different Antenna Signals

Bluetooth Angle of Arrival technology only provides relative azimuth and/or elevation angle data between the sending and receiving devices, and other information is needed to calculate the absolute X, Y, and Z coordinates of the Bluetooth asset tag. The figure shows the mechanism to achieve this calculation. In this example, the receiver coordinates and direction are known, and BLE AoA is used to derive azimuth and elevation data from the Bluetooth asset tag.

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Determine the X, Y, and Z Coordinates of the Bluetooth Asset Tag from the Known Location of the Bluetooth Receiver and the Azimuth and Elevation Information Generated by AoA

There are other ways to calculate the X, Y, and Z coordinates of the tracked device, such as using multiple receivers to detect the signal sent by the asset tag and then using triangulation or trilateral measurement to calculate the asset location.

System structure

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DSGW-200 AoA Locator I/Q Data

Elevation, RSSI, Azimuth, Distance

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DSGW-200 AoA Locator Application Scenarios

  • Real-time tracking of the elderly and children
  • Asset Tracking
  • Tool Management
  • Indoor Navigation
  • Asset Positioning

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