I. Requirements Analysis:

With technological advancements and the growing demand for communication and positioning capabilities, the BeiDou-3 Multi-Function Terminal has emerged. Integrating the advanced technology of the BeiDou-3 satellite navigation system, this terminal is designed to provide users with precise positioning, location reporting, and short message communication functions. In scenarios such as outdoor exploration, military operations, and disaster relief, the BeiDou-3 Multi-Function Terminal meets users' needs for real-time, reliable communication and positioning, delivering comprehensive information support.

II. Product Features:

1. BeiDou-3 Technology: Utilizing the BeiDou-3 satellite navigation system, it delivers precise positioning, location reporting, and short message communication capabilities, providing users with efficient and reliable communication and positioning services.

2. Extended Standby Time: Standby time ≥ 3 days, meeting users' demands for device endurance during extended outdoor activities and ensuring sustained, stable operation.

3. Strong continuous operation capability: Continuous operating time ≥ 8 hours, ensuring stable device performance without time constraints in scenarios requiring uninterrupted communication and positioning.

4. Multi-functional integration: Combines positioning acquisition, location reporting, and short message communication into one system, enabling users to quickly obtain required information and enhance communication efficiency.

5. User-Friendly Operation: Featuring an intuitive interface and straightforward controls, users can quickly get started and efficiently complete all tasks.

III. Application Scenarios:

1. Outdoor Exploration: The BeiDou-3 Multi-Function Terminal provides precise positioning and communication support for outdoor adventurers, ensuring safe and smooth exploration.

2. Military Operations: During military operations, the terminal's high-precision positioning and short message communication capabilities provide real-time information support to troops, enhancing combat effectiveness and command efficiency.

3. Disaster Relief: During emergencies such as natural disasters, rescue personnel can utilize BeiDou-3 multifunctional terminals for location sharing and short message communication, enhancing rescue efficiency and ensuring the smooth progress of relief operations.

4. The BeiDou-3 Multi-Function Terminal, leveraging BeiDou-3 technology, extended standby time, robust continuous operation capabilities, and multi-functional integration, holds broad application prospects across multiple sectors. It delivers efficient and reliable communication and positioning solutions for users.

IV. Product Specifications

Indicator Requirements
Performance Metrics	Connect to your phone via Bluetooth and use the Bluetooth app to enable BeiDou communication and positioning.
	Activate emergency alerts with one-touch SOS
	Supports two-way short message communication and positioning for BeiDou-3
	Features voice prompts for device status, new message alerts, and other notifications.
	Features voice broadcast functionality (text-to-speech conversion and voice message broadcast), with short-duration (within 205 seconds) voice compression transmission capability.
	Supports image compression and transmission functionality
Beidou Short Message Specifications
Signal Type	Supports reception of S2C_d and S2C_p signals
Transmission frequency	Support for BeiDou-3 short message Lf1 and Lf2 inbound transmission rates
Number of Receive Channels	Supports up to 14 channels
Sensitivity	Better than -123.8 dBm (24 kbps information frame)
	Better than -127.5 dBm (16 kbps information frame)
	Better than -130.0 dBm (8 kbps information frame)
Communication bandwidth	Supports Beidou-3 with a maximum single transmission of 1,000 Chinese characters
success rate	≥95%
Beidou Positioning Metrics
Time of Location	Cold start: 32 seconds
	2s (warm start)
	1s (recapture)
Single-point positioning accuracy (1σ)	Horizontal accuracy better than 5m, vertical accuracy better than 10m
Speed measurement accuracy	Better than 0.1 m/s
Location and Speed Measurement Refresh Rate	Not less than 1 Hz
Communication Characteristics Parameters
Support for carriers	All-network compatible (requires carrier to have 4G/5G network coverage in the local area)
Communication Solution	4G/5G Category 1 Solution
SIM card	Chip Card/Card Slot (microSIM Card)
System Metrics
Battery	2500mAh, replaceable battery
Working Hours	≥8h
Operating Temperature	-10°C to +75°C
Storage temperature	-10°C to +75°C