An anti-irradiation hardening method for on-board reconfigurable FIR filters

Abstract

The invention discloses a radiation-resistant reinforcing method for an on-satellite reconfigurable FIR filter. The method comprises the steps of firstly acquiring the bit width of the filter, and performing reinforcement or not according to conditions, wherein when the bit width is expanded, occupied BRAM is increased and the idle BRAM cannot be provided, reinforcement is not performed, and when the bit width is expanded and the occupied BRAM is unchanged, or when the bit width is expanded and the residual idle BRAM is provided, radiation-resistant reinforcement is performed on the parameter of the reconfigurable filter on the ground; and then acquiring the number of on-satellite idle multiplying units, the number of on-satellite idle Slice resources, and the number of the multiplying units and the number of Slice resources used by the filter, if the number of the on-satellite idle multiplying units is not less than the sum of 1 and the number of the used multiplying units, and the number of the idle Slice resource is more than or equal to the product of the number of the used Slice resources and (1+1 / n), using the filter to achieve radiation-resistant fault detection and correction of a circuit, and if no idle multiplying unit is provided or the number of the idle Slice resources is less than the quotient of the number of Slice resources and n, using the filter with low resource consumption to achieve radiation-resistant fault detection of the circuit, and otherwise using the filter with the single multiplying unit to achieve radiation-resistant fault detection of the circuit.

Description

technical field [0001] The invention relates to satellite navigation technology, in particular to an anti-radiation strengthening method of a reconfigurable FIR filter on a satellite. Background technique [0002] The FIR filter implementation takes up a lot of circuit resources, and it is a "single point" for on-board navigation signal generation, which is easily affected by single event flipping. Therefore, it is necessary to strengthen the FIR filter implementation circuit with triple-mode redundancy. At present, the FIR filter implementation circuit can be reinforced by single event flipping in FPGA through the three-mode redundancy method. The three-mode redundancy method has nothing to do with the specific algorithm design. It is a general anti-single event flip reinforcement method. The redundant method has the following disadvantages: [0003] (1) The resource and power consumption is about 3.2 times that of the first-model design, and the load on the star is diffic...

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Problems solved by technology

[0005] The technical problem solved by the present invention is: to overcome the deficiencies of the prior art, to provide an on-board reconfigurable FIR filter anti-radiation reinforcement method, which solves the problem of high resource consumption and high power consumption in the prior art, and the difficulty in realizing on-board loads The problem

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