Control method for compensating receiving system gain temperature stability in real time

Abstract

The invention provides a control method for compensating receiving system gain temperature stability in real time. According to the control method, receiving system gain stability change resulting from a temperature can be compensated rapidly and efficiently. The method is realized through utilization of the following technical scheme that gain values at different frequency points of each channelunder different temperatures are actually measured, and a data table of a channel-frequency-temperature-gain corresponding relationship is established and is flash programmed into FLASH; a DSP processing module in a signal processor queries gain data of corresponding channels, frequencies and temperatures stored by a FLASH circuit according to reported temperature information of a digital temperature sensor and computes gain difference of concerned receiving channels and receiving frequencies among the channels under different temperatures, through application of the queried gain data, whereinthe gain difference is changed along with the temperatures; and gain fluctuation amplitude resulting from temperature change is compensated through utilization of the gain difference, and an error factor resulting from the gain difference among the channels of a receiver circuit system changed along with the temperatures is compensated.

Description

technical field [0001] The invention relates to the field of communication, direction finding and positioning, etc., and specifically relates to a control method for compensating the gain fluctuation of the receiving channel caused by temperature mainly through software. Background technique [0002] Temperature control is one of the most common types of control in industrial production processes. In modern industrial production, current, voltage, temperature, pressure, flow rate, flow rate and switching value are the main controlled parameters commonly used. The temperature control effect of these processes directly affects the quality of the product. In the case of low control accuracy requirements, people often use open-loop control, which is simple in structure and easy to implement. However, when the control accuracy is high, simply using open-loop control often cannot achieve satisfactory control results. The closed-loop control method adopts the conventional analog...

AI Technical Summary

Problems solved by technology

Its disadvantage is that the temperature-resistance conversion is not completely linear, which reduces the precision of closed-loop control

This method uses hardware to compensate the gain stability, and its control accuracy is restricted by factors such as devices and materials, so it is difficult to achieve the ideal use effect.

Images