High Reliable GPS GNSS Locating Receiver Module with Built-in Antenna

Main Features of Youwei GPS GNSS Positioning Modules

1, Weak-Signal Performance

Reliably acquires and maintains satellite locks even in challenging environments (e.g., urban canyons, indoor-outdoor transitions).

2, Multi-Channel Satellite Tracking

Multi-channel receiver processes signals from GPS, GLONASS, Galileo, and BeiDou simultaneously, enhancing fix speed and accuracy.

3, Rapid Initialization

Hot start: <1s (with ephemeris retention)

Warm start: <28s (using almanac data)

Cold start: <30s (full satellite scan)

4, Energy Efficiency

Optimized power architecture reduces operating current to ≤25mA without sacrificing performance.

5, Environmental Resilience

Stable operation across -40°C to +85°C and high-electromagnetic-noise areas.

6, Anti-Interference Design

Minimizes multipath errors for consistent positioning near reflective surfaces.

7, Global Compatibility

Supports all mainstream GNSS constellations (configurable via firmware).

8, Data & Integration

Standard NMEA 0183 output + customizable binary protocols.

Compact 35mm × 25mm SMD package for space-constrained designs.

9, Quality Assurance

FCC/CE/RoHS certified

Parameters of YW-35254G1 GPS GNSS Locating Module

The Significance of TTFF (Time To First Fix) for GPS Modules

TTFF is a critical performance metric for GPS modules, directly impacting user experience and system efficiency. Here’s why it matters:

1. Enhanced User Experience

Faster Response: Shorter TTFF means quicker location acquisition (e.g., <1s hot start vs. 30s cold start).

Critical for Emergency Use: Rapid TTFF (<10s) is vital for rescue trackers, security devices, and real-time navigation.

2. Technical Performance Indicator

Signal Processing Efficiency: Low TTFF reflects:

High Sensitivity (e.g., -162dBm tracking for weak signals).

Optimized Algorithms (fast satellite ephemeris decoding).

Multi-Constellation Support (GPS + Galileo/BeiDou reduces TTFF).

Power Efficiency: Hot-start-capable modules minimize power drain during frequent restarts.

3. Application-Specific Requirements

4. Industry Benchmarks

Consumer Modules: ≤30s (cold start).

Industrial Modules: ≤20s (e.g., drones, surveying).

Military-Grade: ≤10s (anti-jamming + multi-band support).

5. Design Implications

Battery Life: Frequent cold starts (high TTFF) increase power consumption.

Cost Trade-offs: Low TTFF may require higher-end chips or external flash memory (e.g., for ephemeris caching).

1.Company info

Shenzhen Youwei Communication Co., Ltd is a professional GNSS system (GPS, Beidou. GLONASS, GALILEO) navigation solution provider. Intended to provide a one-stop GNSS satellite timing, measurement, positioning, and navigation solution provider to OEM/ODM customers and system integrators both domestically and internationally. Committed to creating long-term value and potential growth for customers.
Since its establishment, Youwei Communication has established a technical team with rich experience in RF technology, GNSS/WIFI/Bluetooth/GPRS software and hardware development. Guoxing Beidou can provide a series of industrial grade high-quality GNSS navigation and positioning modules such as GPS, Beidou, GLONASS, GALILEO, GPRS communication modules, and indoor positioning solutions. Based on the module core, secondary development and application can be carried out to provide customers with personalized wireless product solutions and enhance their overall competitiveness.
The company's products are widely used in M2M industries such as wireless public telephones, commercial telephones, wireless monitoring, GPS car terminals, home anti-theft, car anti-theft, wireless data transmission, wireless DTU, PND, power meter reading, power system monitoring, water affairs, oil fields, mining, POS free machines, shipping, wireless PDA, logistics, IoT industry chain, industrial automation, information dissemination, etc. Remote meter reading and centralized meter reading for smart grids, municipal street light control, building automation control, industrial (security) video monitoring, water conservancy and hydrological monitoring, financial mobile POS terminals, remote pipeline network monitoring for energy (energy, water supply, heating, etc.), meteorological monitoring, environmental protection, intelligent transportation, smart homes, media advertising, digital healthcare, earthquake monitoring, industrial remote sensing and telemetry, fire safety, coal mines, etc. Real time online detection, oilfield data collection and other fields.