At present, car navigation and positioning mainly adopt satellite-inertial integrated navigation systems, namely global satellite navigation system (GNSS) and inertial navigation system (INS). The global satellite navigation system is used to achieve absolute positioning, while the inertial navigation system is used to achieve relative positioning. Only the combination of the two can achieve stable, reliable and high-precision positioning. ST's latest high-precision positioning solution P-BOX is a comprehensive solution for ST's automotive-grade chipset, which can support multi-band GNSS signal reception, Rawdata original observation value output, IMU inertial navigation, etc.

Scenario application diagram

Development board photos

Scheme diagram

p-box 3D reference picture

Core technical advantages

▶ Functional Safety Compatible: The first functional safety ASIL-B P-box application design with ST overall solution (STA9100 is the first ASIL-B chipset in the GNSS market

▶ Robustness: multi-band (L1/L2/L5) and multi-constellation (GPS, GALILEO, GLONASS, BDS, NAVIC and QZSS) to achieve fast convergence and robust positioning performance in challenging signal environments

▶ Wide temperature range: up to 105°C to meet strict operating temperature requirements

▶ Inertial sensor fusion solution: can be integrated with GNSS for continuous and robust positioning under difficult GNSS signal conditions

▶ System scalability: Modular design and rich interface settings allow rapid prototyping and scaling according to customer needs

▶ High accuracy: Real-time kinematics (RTK) precise positioning algorithm provides centimeter-level positioning

Solution specifications

▶ GNSS module

STA8100: AEC-Q100 multi-band multi-constellation positioning receiver

STA9100: AEC-Q100 compliant multi-band multi-constellation positioning receiver that complies with ASIL-B standards.

▶ Processor

STA1385: Cortex-M3 and dual Cortex-A7 ARCH, scheduled 2500 DMIPS, eHSM integration, secure boot support, ASIL-B compliant, AEC-Q100 Level 2.

▶ PMIC

L5965: AEC-Q100 qualified multi-voltage regulator.

Provides a set of capabilities to support applications implementing ASIL a - b - c - d.

▶ IMU

ASM330LHB: High performance 6-axis IMU

Uses redundancy (x2) and combines dedicated safety engine software to be compatible with ASIL-B systems.