Abstract:

It is concluded from extensive practical BD module statistical analysis that the orientation error of BD positioning error distribution of the module is normal distribution.According to the rule of BD positioning error distribution of the module,the double antenna on the same piece of circuit board module is used to receive the BD positioning signal.The location information provided by the BD module is sent to TMS320F28335 DSP chip for real-time algorithm processing,and the processed information is sent to the embedded ARM chips,which update location information on the TFT LCD screen,and set the BD module working mode according to the user settings.In failure in obtaining the BD positioning information,the DSP sends predicted location information by particle filter algorithm to the ARM chips,and marks as "predicted information" to be displayed on the TFT LCD screen.

Key words: dual antenna;BD module;TMS320F28335;STM32F103;UKF;track prediction