Epson's new inertial measurement unit HGPM01 radar precise detection arm

May 20,2024
121 VIEWS

The precise detection of radar is based on the direction of the antenna or the direction of the upper molecular array of the antenna to identify the precise distance of the target. A phased array antenna is an antenna array with electronic steering function, which does not require any physical movement of the antenna to change the direction and shape of the radiation signal. The precise positioning of this electronic steering cannot be achieved without angular velocity and acceleration measurement. The deviation, roll, and pitch of the antenna can all affect the accuracy of the positioning system, and due to the presence of three axes, the calibration difficulty of the positioning system is doubled. As the accuracy of phased array systems increases, the radio frequency spectrum continues to increase, and independent array designs become larger, the system requires higher performance inertial measurement units (IMUs) to support it. The antenna orientation error may come from factors such as spectral density, RMS, velocity random walk, offset repeatability, cross axis sensitivity, etc. Therefore, selecting a suitable inertial measurement unit (IMU) is particularly important,

The performance measurement unit HGPM01, jointly launched by EPSON and a third party, is developed based on high-performance gyroscopes, sensors, and accelerometers. It is equipped with high-performance three-axis gyroscopes and three-axis accelerometers, and can output high-precision yaw, roll, pitch angle data, as well as three-dimensional rotational angular velocity, three-dimensional linear acceleration data, and real-time temperature. Through item monitoring and using IMU for antenna detection, it is possible to overcome the drawbacks of high performance and slow speed when rotating antennas using mechanical methods. Relying on high-precision sensors, high-performance processors, and advanced digital signal processing algorithms, this module outputs very stable angular velocity and acceleration values. The module can support SPI or UART data communication, and the overall size of the product is 37.70 * 24.159.50 mm.

Product application advantages

1. Advanced algorithm: Built in sensor self-learning correction algorithm, real-time dynamic estimation and compensation of gyroscope bias. And it comes with high-performance processors and advanced digital signal processing algorithms, whether it is UART output or SPI output, without the need for customer calculations.

2. Strong reliability: The output data reaches 400Hz, with excellent dynamic performance, which is very suitable for high-precision measurement from static to high-speed motion, and has extremely high reliability.

3. Convenient evaluation: Epson also provides relevant evaluation boards that can observe the raw data of IMU module products

4. Small size: The product size is 37.70 * 24.15 * 9.50 mm and can be directly installed on the antenna turntable.

5. Large range: angular velocity range+400dps, fully meeting the customer's+100dps needs; The acceleration range is ± 16g, meeting the customer's 5g requirements.

Not only in radar systems, but also in other areas such as drones, HGPM01 has a wide range of applications. Moreover, the personalized settings of HGPM01 are very rich. Although the product has been calibrated, customers do not need to calibrate it. The demo board installs the IMU module on a single board and connects it to the serial port through a pin arrangement. Combined with the upper computer demonstration, it can stably output angular velocity and acceleration values. However, the device has two interface modes, namely UART mode and SPI mode, which can be modified by installing CH340 serial port driver and IMU upper computer to meet customer needs.