Ultra Short Base Line Position System (USBL) is an underwater acoustic positioning system which realizes position, track and data communication with cooperative multi-target. USBL works at mode of response.The content including the realization of target’s position computation algorithm on TMS320C6416DSP chip, the design and realization of real-time simulation console and the creation of display console with the realization of array installation calibration algorithm is detailed in the paper.Master slave frame contained three TMS320C6416 chips is adopted. The master DSP is responsible for computing. The target’s position is figured out after data of compass, GPS and two slave DSPs are acquired. Then all the information worked out is sent to the display console for show.The simulation/display software is composed of the simulation console and display console. The simulation console not only supplies the system with various real-time simulative data, but also provides information’s show for operator’s convenience. The display console takes charge of control and show in real time. And the calibration module’s realization on the display console makes the system be capable of doing array installation calibration at any moment. The simulation/display software is developed under the environment of Visual C++. According to the traits of system, multi-buffer with control plotting technology is introduced combining multi-thread technology, which makes plotting efficiency improved and multiple images showed with high quality in parallel way.Through testing of experimental data and simulation, position of multi-target and calibration are available. Meanwhile all software’s steady long-working is tested. besides, the technologies and algorithms realized are all validated.