Ship-borne sonar target echo simulation method

Abstract

The invention discloses a ship-borne sonar target echo simulation method. The method is characterized by including following steps: step 1, setting target parameters including target distance, orientation, radial navigational speed, number of channels of a receiver array and position information of the channels, and storing the set target parameters in a high-speed operation processing unit; step 2, outputting emitting signals and triggering signals by a sonar emitting signal source, and respectively connecting the emitting signals and the triggering signals into a high-speed analog-digital conversion circuit and a triggering circuit; receiving the emitted triggering signals by the triggering circuit, triggering the high-speed analog-digital conversion circuit to collect the emitted signals to acquire signal data, and sending the signal data together with triggering signal data into the high-speed operation processing unit. By the method, laboratory testing of ship-borne sonar target echo simulation is realized in actual application, testing adaptability of a multi-sonar system is improved, testing level of ship-borne sonar equipment of China is improved, and technologic upgrading of scientific research, testing, debugging and inspecting of domestic sonar systems is promoted.

Description

technical field [0001] The invention relates to a method for simulating the echo of a ship-borne sonar target, belonging to the field of simulation testing of a ship-borne sonar, in particular to a method for simulating the echo of a ship-borne sonar target. Background technique [0002] As a complex underwater acoustic system, shipborne sonar is tested or debugged in the laboratory or on the ground. Due to site and environmental constraints, it is impossible to use real underwater or surface targets for testing, which reduces the sonar debugging and functional performance testing. To verify the efficiency, in order to conduct ground testing or debugging, a sonar analog signal source must be used to simulate sonar echoes for testing or debugging. [0003] The existing technology mainly has the following disadvantages: [0004] 1. At present, the existing technology can only generate and transmit the simulated target echo signal according to the set waveform, and can only si...

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Problems solved by technology

[0004] 1. At present, the existing technology can only generate and transmit the simulated target echo signal according to the set waveform, and can only simulate several specific waveforms. There are certain differences between the signal characteristics and the real signal, and the simulation of any echo waveform cannot be realized;

[0005] 2. At present, shipborne sonars generally use positive pulses or negative pulses for triggering, but the existing technology only has one of the triggering capabilities, which cannot meet the testing or debugging requirements of various shipborne sonars, and the test cost is relatively high

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