Abstract: For improving the positioning accuracy of the single frequency single constellation GNSS/ SINS integrated navigation system, a multi-receiver based GNSS/ SINS integrated navigation system is proposed in this paper. Measurements from multiple receivers are employed in the navigation information estimation, and the estimated state errors are applied to compensate the SINS errors. Center and cascaded filter architectures are employed to process the multi-receiver based GNSS/ SINS information fusion. The experimental results showed that the positioning accuracy is improved with more receivers included in the integration. The cascade method could maintain the positioning accuracy with computation load reducing. Due to the low cost of the receiver, the method can improve the positioning accuracy without obvious cost improvement.