多星对地定位测速的合作与非合作模型对比

Contrastive analysis on cooperation and non-cooperation models for location and velocity measurement by multiple satellites to earth objects

摘要:

针对多星对地定位测速的应用问题，首先分析了星载电子侦察定位与卫星导航定位在数学模型上的本质联系，然后在卫星导航的合作式测速模型的基础上，推导得出多颗电子侦察卫星对辐射源目标进行非合作测速的模型，并进一步讨论了在三星条件下的非合作测速问题的求解。仿真结果表明：在2 Hz频差测量精确度下，测速精确度可达5 m/s量级。从而为电子侦察卫星对运动辐射源目标的测速应用提供了参考。

Abstract:

The application of location and velocity measurement by multiple satellites to earth objects is very important. The intrinsic relationship for location model between satellite electronic reconnaissance and Global Navigation Satellite System(GNSS) is firstly analyzed. The non-cooperation velocity measurement model for radiation objects through the multiple electronic reconnaissance satellites is naturally established based on the GNSS principle. Then the instance is further discussed when the number of satellite decreases to three. The simulations demonstrate that the velocity precision about 5 m/s is acquired on condition of frequency difference of 2 Hz. This is an important reference for radiation object velocity measurement application by the electronic reconnaissance satellites.