The Research Of Rocket Data Recorder Recovery System Key Technology

Rocket data logger records the various parameters of rocket stages, after the test launch of a recall on the recorder and data analysis,provide a reference for scientific research and production, but the rocket drop zone recorder recycling a wide range of difficulties.This paper presents a rocket recovery system logger program, the program is based on the recorder was in the air to eject a starting point to design. System includes the arrow on the beacons, ground and ground wireless handheld devices. The approach to wireless assisted GPS positioning-based positioning. Beacons on the ground equipment to send location information and wireless signal processing, to gain memory location. As a result of double-positioning ways to improve the reliability of data memory recovery stability. To achieve fast positioning of the data memory search.The paper analyzes the trajectory of the rocket body calculation of the motion state of separation, also gives the entire workflow system. Through the design of GPS receiver system for receiving location information, Respectively mean filter, median filtering, Kalman filter algorithm for static and dynamic location data filtering, Improved positioning accuracy, GPS and wireless communications to enhance the anti-blocking ability to use Microstrip antenna. Second, improve the reliability of the system from the start, characteristics of the system chosen for the RSSI-based localization algorithm for wireless ranging and analyzes the positioning error. In order to increase the air in time for the beacon set high reduction programs, and thermal protection and anti-overload approach.The experiment shows that using GPS positioning and wireless location combination to achieve rapid recovery of data storage requirements, the system has high real-time and flexibility.