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在多传感信息融合系统中,受系统过程噪声和相关的量测噪声等因素影响,局部估计误差之间存在一定的相关性.针对考虑局部估计误差相关性情况下的传感器选择融合问题,构造了基于融合估计精度的优化指标;引入传感器子集的势约束,将传感器选择融合问题转化为一个组合优化问题;采用交叉熵优化方法,通过交替执行抽样和更新抽样分布参数两个步骤,获得了优化问题的解.
In the multi-sensor information fusion system, due to the influence of system process noise and related measurement noise, there is a certain correlation between the local estimation errors.For the problem of sensor selection fusion considering the correlation of local estimation errors, The optimization index based on fusion estimation accuracy is introduced. By introducing the potential constraints of sensor subsets, the sensor selection fusion problem is transformed into a combinatorial optimization problem. By using the cross entropy optimization method, the sampling and updating of the sampling distribution parameters are alternately performed in two steps, Solution of optimization problem.