Rowland C comprehensive signal generating device

Abstract

The invention discloses a Rowland C comprehensive signal generating device which comprises a linear power module, a GPD / BD taming clock module, a signal generator core processing board, a high-precision signal attenuator set and a high-order band-pass filter module. The signal generator is clear in overall module division, and the functions and interfaces of all the modules are reasonable in design; the single SOC chip completes all signal processing algorithm designs; the signal processing framework is reasonable in design, a single chip can generate Rowland signals of three station chains and nine stations at the same time, real-time time information coding can be conducted on six stations at the same time, and all testing of indexes such as positioning, time service and interference resistance of Rowland C receiving equipment can be completed through the single equipment. The design of the high-precision attenuator group can accurately control the intensity of an output signal and ensure the accuracy and completeness of a Rowland C waveform, and the signal generation equipment can be used for time delay test and calibration of a Rowland C receiver and detection and calibration of the working state and performance indexes of the receiver, and has a wide application prospect.

Description

technical field [0001] The invention relates to the technical field of signal and information processing, in particular to a Roland C integrated signal generating device. Background technique [0002] The full name of Roland C is long-range navigation. It is a long-range hyperbolic radio navigation system designed in the 1960s. Its operating distance can reach 2000 kilometers and its working frequency is 100 kHz. Navigation and positioning system. Later, due to the improvement of technology, the Roland C system was modernized and improved, and Eurofi x coding technology was added. The Roland C system has the timing function and is an international long-wave high-precision timing method. [0003] The technology of Roland C receiving equipment has also progressed accordingly, from analog hard-limited sampling Roland C receivers to digital signal processing technology Roland C receivers, from single-chain receivers to dual-chain and multi-chain receivers, to the present In th...

AI Technical Summary

Problems solved by technology

[0004] Domestic Roland C equipment manufacturers are currently using A-8 and LSG-5 Roland C simulators imported from abroad in the 1990s, and foreign manufacturers have stopped production. These simulators have been used for many years, and the performance of the equipment is aging. , and the functions of these simulators are not perfect, and cannot fully meet the development needs of the latest receiving equipment. The main defects are as follows:

[0005] 1. They are all single-chain signal designs, which cannot meet the requirements of more than two chains and multi-channel equipment receiving capability inspection;

[0006] 2. There is no way to superimpose sky-wave signals, and it is impossible to detect the impact of sky-wave interference on equipment under different intensity and delay conditions;

[0007] 3. There is no way to superimpose continuous wave signals, and it is impossible to detect the impact of continuous wave interference on equipment under different conditions;

[0008] 4. There is no "Eurof i x" data modulation and encoding function, the decoding function of the device cannot be detected, the internal delay of the receiver cannot be calibrated, and the number of decoding channels of the receiver cannot be detected;

[0009] 5. There is no time synchronization function with the satellite navigation equipment, and the timing accuracy of the equipment cannot be detected in real time;

[0010] 6. The resolution of simulator parameter settings is not enough to meet the needs of fine testing

[0011] There are also relevant institutions in China that have carried out the development of simulators, but no products have been formed, and there is no one model that can contain all the above functions. The integrated signal generator involved in the patent of this invention is the only device that can meet all the above functional requirements.

Images