Module Performance Test of Rd-03_V2

I. Hardware Overview

1. Product Features

The Rd-03_V2 radar module is equipped with the S1KM0000 chip from ICLEGEND MICRO, featuring a high-performance 24 GHz single-transmit single-receive antenna and supporting peripheral circuits.

The S1KM0000 is an integrated FMCW radar SoC based on a radar transceiver architecture designed for high-precision millimeter-wave sensing.

FMCW (Frequency-Modulated Continuous Wave) technology detects targets within a defined area and, through radar signal processing, achieves high-sensitivity motion and micro-motion detection.

The Rd-03_V2 can detect moving human bodies at distances of up to 7 meters, and determine whether there is human movement or micro-movement within the sensing area.

Key Features

• Supports 24 GHz ISM band
• 1T1R antenna with a narrow beam, high resolution, wide bandwidth, and strong anti-interference capability
• Maximum sensing distance up to 7 meters
• Wide detection angle up to ±60°
• Accurately identifies targets within the sensing zone, supports customizable sensing areas to filter external interference
• Supports automatic threshold generation

Main Specifications

2. Pin Definition

Main Schematic Diagram:

Chip Architecture:

3. Installation Diagrams

Ceiling-mounted Installation

Wall-mounted Installation

II. Radar Module Testing

Testing was conducted to evaluate the detection distance and range of the Rd-03_V2 module.The module was wall-mounted and connected to a USB-to-TTL tool, with configuration and monitoring done via the PC software.

Parameter settings:

• Maximum distance: 10 m
• Delay time: 5 s

1. Distance Testing

Due to space limitations, the farthest test distance was 7 m.

Summary:

• At short ranges (< 4 m), average error ≈ 30 cm (likely due to nearby environmental interference).
• At long ranges (> 4 m), average error < 10 cm — showing excellent distance accuracy.

2. Human Presence Detection Test

Target disappearance delay time: 5 sIf no motion or micro-motion is detected within this delay period, the system determines that the area is unoccupied.

Demonstration:

• When no movement is detected during the delay, the indicator LED turns green, and the distance display reads 0 m (no human detected).
• When movement is detected, the indicator LED turns red, and the target distance is displayed (human presence detected).

Summary:The disappearance detection was highly accurate —After leaving the area for 11 s, within 5 s (at 16 s total), the system correctly switched to “no-person” status.When human movement was detected again, it promptly resumed target tracking and displayed the updated distance.